"The Real "Darkness" that was Contained within the "Book of Darkness""
Summoning U-D
Kyrie and Dearche wakening U-D
Battle sequence
Video gameMagical Girl Lyrical Nanoha A's Portable: The Gears of Destiny
Japanese title「「闇の書」が内包していた本当の「闇」」
("Yami no Sho" ga Naihō shiteita Hontō no "Yami")
Playable charactersHayate Yagami
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"The Real "Darkness" that was Contained within the "Book of Darkness"" (「「闇の書」が内包していた本当の「闇」」 "Yami no Sho" ga Naihō shiteita Hontō no "Yami")[1] is Sequence 04 of Magical Girl Lyrical Nanoha A's Portable: The Gears of Destiny.

Short summaryEdit

This sequence follows Hayate Yagami and Reinforce as they are trying to track down the Materials. It opens to Thoma Avenir and Lily-Strosek arriving in the "present" time and encountering the player character, and after getting defeated fleeing. They also encounter the Liese twins, who still hold a grudge about the events surrounding the Book of Darkness, before finally finding Dearche. After Dearche is defeated, she and Kyrie Florian succeed in wakening the Unbreakable Dark (aka. U-D) and whoever fought Dearche gets to try taking on U-D. Whether the player wins or loses, U-D goes out of control and flies off after slaying the Materials. Kyrie then goes after her.

Sequence structureEdit

Destiny 14 - Battle 1A
Hayate vs. Thoma
Destiny 15 - Battle 2A
Hayate vs. Liese twins
Destiny 16 - Battle 3A
Hayate vs. Dearche

Destiny 17 - Battle 4A
Hayate vs. U-D
Destiny 14 - Battle 1B
Reinforce vs. Thoma
Destiny 15 - Battle 2B
Reinforce vs. Liese twins
Destiny 16 - Battle 3B
Reinforce vs. Dearche
Destiny 18 - Battle 4B
Reinforce vs. U-D

Like Sequence 03, the choice of character for Destiny 16 influences which Destiny will be in the last battle. If Hayate is chosen, it leads to Destiny 17 where Hayate confronts U-D, while if Reinforce is chosen for Destiny 16 she faces off against U-D in Destiny 18.

Also, no matter which character is chosen to fight with U-D in Destiny 17/18, the story proceeds even if the player is defeated with minimal changes in dialogue. However, beating U-D with each of them here is two of the requirements for unlocking the Final Sequence.

Long summaryEdit


Sequence 04 opens on Thoma Avenir finding himself in a desert on an unknown planet. He complains that whatever happened hurt and finds that Lily-Strosek is also there with him. He wonders aloud what happened and how he got here and how come Lily is also here. Lily doesn't know either and they recount that just before this he was going with Isis Egret to the training grounds while Lily was undergoing a medical check at the Engineering Department.

This is when the Bible of Silver Cross shows up and starts producing noises. Thoma accuses it of causing this, but Lily translates that it is saying that Thoma was summoned here. Thoma is puzzled by this but comments that summoning someone without warning is rude. In any case he decides that they cannot stay there.


Thoma and Lily react-engaging into Black Knight mode

Meanwhile, Lily notices that someone is coming and Thoma senses that someone is using mana and flying at them. Thoma decides to try avoiding confrontation, but in case it proves inevitable he wants to be prepared, so they React-Engage into Black Knight mode and set out to meet this person.

Destiny 14 Edit

Battle 1A: Hayate vs. Thoma Edit

The person Thoma and Lily noticed turns out to be Hayate Yagami. Hayate wonders if Thoma is as bad a person as he looks. Meanwhile Thoma exclaims aloud his suprise that "Commander Yagami" is so small while Lily wonders also aloud (while Reacted with Thoma) if there is an emergency and if that's why they were summoned. Hayate is suprised at hearing two voices and wonders if they are Unisoned. Lilly notices that Hayate is looking at them as if they are strangers so Thoma asks Hayate is she is Commander Yagami Hayate. Hayate confirms it but states that she doesn't get why is he calling her Commander and uses polite language to respond. This further shocks Thoma, since Hayate as his superior never used this form of address with him before.

Hayate asks them did they met before or did they mistake her for someone else. Furthermore Hayate figures that they aren't locals so asks to see their travel papers. Thoma and Lily confer non vocally and quickly figure out that neither of them has any IDs with them since Thoma left his own with Isis and Lily's are with Mariel Atenza. Hayate notices their silence and notes that this is very suspicious behavior and so asks them to tell her their story. Rather than face Hayate and TSAB without any documents they decide to flee and a fight breaks out.

After Hayate wins Thoma notes with suprise that none of his attacks connected while Lilly informs him that the Divider is malfunctioning and is no longer able to divide mana. Hayate notes to herself that the combat technique Thoma used is unusual and that compared to their looks Thoma and Lily don't seem like bad people.

This is when Reinforce flies and the fact that Hayate addresses her as Reinforce confuses them since they only know Reinforce Zwei and the person before them doesn't look like Reinforce they know. They conclude that given that the odds aren't in their favor now, and despite the fact that angering Hayate will be a terrible idea, they need to escape which they succed in by Lilly activating Silver Cross. When Hayate notices that they are gone she notably isn't particularly shocked. She only notes that it's good she took video of them so she can later arrange a search for them, but for now she needs to focus on going after the Materials.

Battle 1B: Reinforce vs. Thoma Edit

In this variant it turns out that it was Reinforce flying towards them. Lilly and Thoma are confused by Reinforce's appearance mainly due to having black wings which remind them of Hayate. Looking at Thoma Reinforce wonders if he might be a combat mage or a knight, given his looks and later notes that their power feels different from mana and wonders if they are even mages. Reinforce assumes to herself that they aren't local since they are currently on an uninhabited non-adminitrated world and Thoma confirms it by saying that they seem to have gotten lost, at which point Hayate flies in.

Like in other variant Thoma and Lily are shocked by how young Hayate looks, who in turn inquirers about them with Reinforce who explains that they claim to have gotten lost. Hayate asks them for their travel certificates since as she explains this is an non-administered world and therefore travel is not permitted without permissions. Neigher Lily nor Thoma have their IDs with them.

Thoma openly asks Hayate if she is Commander Hayate Yagami and clarifies that they were unexpectedly thrown here and laments out loud if all of this is a practical joke. Hayate notices that there are two voices coming from Thoma and wonders if they are also a Unison type. Hayate confirms that she is Hayate Yagami but wonders why he is referring to her as Commander. This leads Thoma to ask what year it is and when Hayate answers that it is 0066, he is shocked that he was thrown 15 years into the past. He does not believe it for a moment and wonders if it is some kind of test or a prank from the Huckebein. Given what they have learned, Thoma decides for them to run away. Hayate moves to stop them but Reinforce stops her, saying this is her fight and a battle breaks out.

After Reinforce wins, Lily notes that Divider is malfunctioning and that it cannot divide mana, Thoma is shocked by this and Reinforce notes that his combat technique that involves using pages of his tome is unusual. Hayate tries ordering Thoma to calm down and come with her. She introduces herself and Reinforce by their full titles. Finding out that this, according to Thoma, adult-looking person has the same name as their teacher Rein. This is too much for Thoma and Lily so they use the Silver Cross to escape.

Destiny 15 Edit

Battle 2A: Hayate vs. Liese twins Edit

Hayate runs into the Liese twins and is surprised by their presence. Liese Aria explains that they are on a mission on behalf of the Bureau at the request of Leti Lowran. Hayate tries offering their (her and Reinforce's) help only for Lotte Liese to turn her down. Lotte then asks Hayate if she is really herself, which surprises Hayate. Lotte then wonders this Hayate may be a Dark Fragment.

Aria tries to interject but Lotte orders her to shut up and asks Hayate if she remembers what happened during the time of A's and what they did to Hayate and her servants. Hayate replies she remembers, but that she also remembers Gil Graham. This causes Lotte to cut her off and ask her outright does she hate them or does she want to beat them up. Not getting a response out of Hayate, she states that the fact that Hayate does not seem to want to attack them or hate them is a proof that she is a fake, and hence attacks.

After the battle, Aria asks Lotte to stop fighting since Lotte is running out of stamina. Hayate explains that she is grateful to Graham for allowing her to live in comfort ever since she lost her parents. She further notes that while she knows what his plan was, she is aware that he did so only because he felt this was the only way to end the curse of the Book of Darkness, from which she was going to die in the end anyway. Hayate states that this is why she does not hate any one of them.

Lotte challenges Hayate's statement by saying that this feels like downplaying or whitewashing their actions. Hayate responds that if Lotte feels that she is someone who would lie like that, she cannot help. She further notes that she plans to spend her life bearing the responsibility for all the sins of the Book of Darkness, and will think very hard on how exactly she will accomplish this after the (current) incident is over. Unfortunately Aria notes that she will not be able to accept this right now (mostly due to Lotte) and Hayate responds that it is fine with her since that is life, and the twins fly away.

After the twins are gone, Reinforce flies in and asks Hayate if she just fought the twins. Hayate responds that they just mistook her for a Dark Fragment and their fight ended half way through, which does not exactly convince Reinforce. This is when shaking starts and Hayate notes that it is another spatial tremor (空間震動) while Reinforce notices a mana convergence (魔力集束) is also happening. Hayate wonders if the Materials are responsible for this and they set off to check it out.

Battle 2B: Reinforce vs. Liese twins Edit

Reinforce is surprised to run into Liese twins, and they in turn are not glad to have run into the Will of the Book of Darkness. Lotte Liese refuses to answer Reinforce's questions and states outright to her the fact that the threat of the Book of Darkness is no longer does not mean the sins have disappeared. Aria Liese tries to calm her down and Reinforce replies that she understands her anger, but the Defense Program which had caused the curse of the Book of Darkness is now gone, and soon even she herself the Master Program of the Unison Device (管制融合騎) will disappear and take with her the weight of those sins.

Unfortunately this is not enough for Lotte, who mentions how the curse has caused the deaths and destruction of lives, and asks Reinforce how it is that just because this has ended they can no longer blame her for it. Aria again tries to reign Lotte in while Reinforce answers that she is not asking for forgiveness and she intends to bear the burden of the entire blame. This is interpreted by Lotte as a confession and she attacks.

After the fight, Reinforce further admits to killing their student (Clyde Harlaown) and destroying Gil Graham's life, and then Lotte continues to mention about Clyde but is cut off by Aria. Aria then further chastises Lotte by saying that no matter how much Lotte blames Reinforce, it will not bring back what was lost. She then proposes that they should instead stop adding to their list of grievances and move on. Lotte agrees that she was wrong in attacking Reinforce, but is still unwilling to let go of her grudge and thinks she will never be able to do that.

Aria proposes, that since both sides have their own missions they should just stick to them and keep out of each other's way. After asking Reinforce to inform Hayate and the Wolkenritter of the same, they fly away. After they are gone, Hayate arrives and asks Reinforce if she just fought the Liese twins and if they said anything. Reinforce replies that they fought "a bit" and informs her of the agreement with Aria. She does not mention anything about Lotte's grudge against her.

Like in Battle 2A, at this point the space itself starts shaking (spatial tremor), Reinforce detects a mana convergence and they set off towards the source, with Hayate wondering if this might be caused by the Materials.

Destiny 16Edit

Battle 3A: Hayate vs. Dearche Edit

Near the source of the tremor Hayate runs into Dearche and complains on how hard it was to find her. At Dearche's question what's her business (she keeps calling her little crow) Hayate replies that her business is making sure Dearche doesn't cause trouble to people, and that given the spatial tremor she wants to know what is Dearche up to. Dearche refuses to answer stating that she has just be doing what she as a King has to.

Hayate inquires about the Unbreakable Darkness and tries offering help as long as it won't cause trouble for anyone nearby but is cut off by Dearche who feels insulted by the offer and in a threatening manner asks Hayate if she knows what the Materials will do once they obtain it. Hayate completely ignores the implied threat and cheerfully replies that she doesn't since nobody told her.

Dearche explains that with the infinite power of the Unbreakable Darkness, she will become a true king. A king that nobody will be able to stop and harm, which will allow her to end the days when they were nothing but component parts of Book of Darkness, and therefore free the three of them. Hearing this Hayate again tries offering help, saying that TSAB has many system analysis experts and that she is sure they will quickly be able to figure a way to free the three of them.

This offer infuriates Dearche, who considers that freedom granted by the mercy and pity of others is not a true freedom but is in fact just another cage. She ends the discussion stating that she is going to end Hayate's annoying chirping and that she will do this and free them her way.

After Hayate wins, she complains in a hurt voice that King (her name for Dearche) is too rough, while Dearche is shocked by Hayate's sturdiness. Hayate explains that it's due to a technique, that she is yet to master, that Nanoha Takamachi taught her. Dearche is pissed off at Hayate because she in her mind keeps bothering her at the worst times without any consideration of her and Hayate replies that this wouldn't have happened if she didn't keep doing bad things. Hayate again tries to get Dearche to tell her about Unbreakable Darkness, how they felt when they were parts of the Book of Darkness and offers help saying that there has to be a way to free them without bothering anyone or restricting their freedom. Dearche scoffs at this and dismisses this as a hopeless pipe dream, since if it were to be true nobody would have ever been unhappy.

Battle 3B: Reinforce vs. DearcheEdit

When Reinforce runs into Dearche, Dearche is surprised to see her, she refers to her as piece of junk Unison Knight, and wonders if she has come to surrender. Reinforce tells her she has came to hear them out and that she wants to know about this "Unbreakable Darkness" since even she, the Control Program and Unison Knight of the Book of Darkness doesn't know about it. She says she also wants to know what they will do with it once they have it.

Dearche explains that it's no wonder that Reinforce doesn't know about the U-D, since Reinforce is just a system from the time Book of the Night Sky was made while the Materials and U-D were made from the start to be completely outside her control so they could take over the Book of the Night Sky and use it as their power. This doesn't surprise Reinforce. Dearche continues to explain that they entered a dormant state for a long time after that and then later were mixed in with the Defense Program and that a long time of suffering for them followed.

Reinforce tries to say that what happened was inexcusable but Dearche interprets it as an accusation against her and states that she has no reason to apologize since she is a King since her rule of force doesn't play favorites and that she will not let anyone get in her way. After that she attacks.

After Reinforce wins, Dearche blames her defeat on her strength not recovering completely. Reinforce states that she doesn't want to fight but talk. Dearche brushes her away stating that there is nothing to talk about and that she is just doing what she must do as a king.

Cutscene Edit

No matter who fought her, Dearche will say that the time has come and turn to Kyrie (who it seems was right there all along) demanding if the preparations are complete. Kyrie confirms saying that the Forced activation system and Link unit are fully operational. Dearche gives her the go ahead to revive the Unbreakable Darkness.

U-D artists impression

U-D "artist's impression"

She recollects that according to her memory it will likely be in the form of "great wings" so given that and it's name she thinks it might be some kind of warship or even externally reinforcing equipment. Kyrie creates the "artist's impression" of what it might look like and Dearche ecstatic at how cool it is while Hayate and Reinforce are mostly confused by it. Dearche gloats and laughs some more about how failure is impossible and how this is terrible for Hayate and Reinforce, and at her orders U-D wakes up.

U-D actual

Once U-D wakes up she begins speaking in a robotic fashion lacking inflections and any conjugation (the text is all kanji). She announces in a manner of a computer log that the Unit is starting up, Infinite Link System is operational and that the System "Unbreakable Dark" is functioning normally. Meanwhile everyone is suprised by the fact that U-D is actually humanoid. Kyrie demands answers from Dearche on this and Dearche says that it is odd U-D is humanoid in spite of her memories. She justifies it by saying that given the Materials didn't have the humanoid forms until recently it's not impossible that U-D took one too.

Reinforce thinks about how it will be good if it's just a harmless system, since she doesn't sense any mallice in it, but is still hesitant. Hayate on the other hand decides that the most pressing concern is giving a nickname to U-D, and she proposes Darkness-chan (Yami-chan (ヤミちゃん) in Japanese) since it's full name is Unbreakable Darkness.

U-D states that she has visually detected the Book of the Night Sky, reports that the Defense Program is damaged and that she is having issues authenticating the owner. Hayate introduces herself as the current Mistress of the Night Sky, which pisses Dearche off. She demands the others to back off since she was the one who activated the U-D and therefore she is hers. Kyrie points out that she was only able to do it using the activation method she provided. Hayate acknowledges this but states that she is still the Mistress of the Night sky but is cut off by now angry Dearche who demands they all shut up and states that U-D is hers and she is not giving it to anyone.

U-D Soul Wings

U-D manifesting Soul Wings for the first time

The seeming conflict causes the U-D to spawn it's Soul Wings and state that since the situation is volatile, in order to ensure the system's safety, the nearby risk factors (those present) will be eliminated.

Destiny 17 & 18Edit

Depending on who the player took into battle against Dearche, the same character will be auto selected for the fight against U-D. If Hayate fought Dearche Destiny 17 will happen and she will fight U-D. If on the other hand Reinforce was the one, Destiny 18 will happen where she will fight it. Dialogue in both destinies is rather similar, but interestingly in both battles it is not required for the player's character to win for the story to continue, and defeat is quite likely since U-D is an order of magnitude tougher than previous opponents. The dialogue after the fight will change depending on weather the battle resulted in victory or defeat.

Pre battle dialogue is pretty similar in both destinies. U-D loads the appropriate combat system (Air Combat in Hayate's case and Air Hand to Hand combat in the case of Reinforce) and states the Output Limit (Hayate: 5%, Reinforce 6%). The player character remarks on the oppressive aura that she feels coming from the U-D and how she has unimaginably immense mana reserves. In the case of Reinforce she is surprised that there was another system in the Book of Darkness that had unlimited mana reserves. Then the other character, that is not fighting, begs the player character to escape since the opponent is too strong and U-D states that it's commencing combat operations.

In case of Hayate's fight if she looses the U-D remarks how the system load is withing acceptable tolerances, Hayate remarks how strong U-D is. Dearche gloats and congratulates U-D on ridding her of Hayate. U-D recognizes Dearche as Unit-D, a component of the Book of Darkness, and Dearche confirms it saying that she is the king of the Book of Darkness that can rule the entire universe including Hayate and Reinforce.

If Hayate wins she is stunned that she won. U-D, having trouble forming sentences, barely maneges to stutter out that she is malfunctioning, that system load has increased and therefore the operation is difficult. Dearche is stunned by this development and so is Kyrie who voices her surprise that Hayate was so strong, strong enough to defeat "that monster". Reinforce meanwhile is glad and proud of Hayate and states that she has grown so much. Dearche then berates U-D for quitting despite seemingly minor damage and like in the case of loss U-D recognizes her as activated component of the Book of Darkness, Material-D, which Dearche confirms.

In the case of Reinforce's fight if the looses she remarks that she is not suprised she lost since it was impossible to begin with. U-D remarks that Master Control Unison Knight has been crushed and Hayate calls out to Reinforce worried for her. U-D then recognizes Dearche as Material-D and wonders if she is activating. Dearche confirms using the same speach she used in the case of Hayate's loss.

If Reinforce is triumphant on the other hand, she is amazed she succeeded, while U-D is having trouble speaking and Dearche is berating her for quitting like in the case of Hayate winning.

Epilogue Edit

Materials meeting U-D

Materials meeting U-D

During the epilogue U-D drops her all conjugated nouns (all kanji) monotone speech, but in fact expresses surprise at seeing Material-D and other Materials and addresses them by their names. Materials are overjoyed at meeting her and Dearche explains that this is because they had been searching for her for a long time. U-D replies that she wishes she could say the same, but unfortunately she has been activated. This confuses Kyrie, because she doesn't know what she is talking about.

U-D explains that long ago nobody could restrain her, so the people dealing with her in desperation buried her beneath the Book of Darkness, and then erased all records about her. This is why even Masters or the Master Program of the Book of Darkness never knew about her, about the true Darkness of the Book of Darkness. At the end her Soul Wings stab all of the Materials through the chest and she finally says that whenever she awakens nothing is left in her wake but ruins. She apologizes and flies away despite Hayate's pleas to stay. Kyrie uses Accelerator to chase after U-D saying she still has business with her.

Reinforce and Hayate notice that the Material bodies have dissapeared. While Hayate is concerned that they might have actually died, Reinforce explains that she suspects that after their structure maintenance system stopped they started regenerating somewhere and that they will just need time to regain strength. This is when Shamal phones in to tell them that the Dark Fragmen situation has gone from bad to worse with a staggering number of Fragments appearing all over the place, and that the Wolkenritter are setting out to handle the problem.


Character appearancesEdit

Device appearancesEdit


  1. ^ Magical Girl Lyrical Nanoha A's Portable: The Gears of Destiny Official Strategy Guide Book.
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