Deep Insanity: The Lost Child

A mysterious illness has put millions in comas and an underground realm has appeared at its origin: Antarctica; many enter seeking to extract strange creatures and undiscovered resources, but one young man searches for something deeper, a cure.

As Shigure begins to settle into his new life as a Sleeper, he starts to wonder what he's good at, and what he can accomplish down in the Asylum.

Shigure's behavior around Kobato makes the others believe that he is attracted to her, so they decide to do something about it.

The day of the plot has arrived and the team heads into the Asylum; but when Hayden appears during the mission, things go very wrong.