| IS: Deep Diver | |
|---|---|
 Sein leaping out of the ground | |
| Spell profile | |
| Other names | Inorganic Substance Diving |
| Primary caster | Sein |
| Classification | |
| Magic system | Special (IS) |
| Category | Support |
| Type | Transport |
| Production | |
| Japanese name | ディープダイバー (Dīpu Daibā) |
| First app. | StrikerS (ep.12) |
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Deep Diver (ディープダイバー Dīpu Daibā), also known as Inorganic Substance Diving (無機物潜行), is the Inherent Skill of Sein. This rare ability, granted by chance thanks to a genetic mutation, allows Sein to "swim" through inorganic elements as if they were water.
Sein can "bring along" other persons or items when using the skill. This is seen when she saves Lutecia and Cinque, and takes the Relic case with her. In StrikerS manga (ch.11), she can even transport several Type I Gadget Drones this way. However, the skill will be resisted by field or barrier defenses, and is thus inefficient in a prolonged battle.