Deep Insanity THE LOST CHILD (Original Japanese Version)

A strange disease is linked to a mysterious hole leading to an underground world: the Asylum. "Sleepers" go into this world to fight strange monsters and recover unknown resources. Now, a young boy who dreams of being a hero has arrived at the Asylum.

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.

Larry goes on a dangerous and illegal mission deep into the Asylum, and forces Shigure to come with him.

Shigure investigates the past of XO Leslie when a mysterious assailant suddenly ambushes him.

Shigure is always awkward around Kobato, and the rest of the team thinks he might have a crush on her. They scheme to set them up, but…

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.

With Leslie gone, the team is forced to find their way on their own. And Shigure begins to have doubts about his own mission…

With heavy pressure coming down the chain of command, Vera decides to lead a mission into the Asylum on her own.

Vera is trapped in a time loop as she tries to complete her assassination mission. She ponders how to best make the mission succeed.

Vera removes Shigure from the platoon, but he's not ready to leave the Asylum just yet…

Now trapped in a time loop himself, Shigure struggles to unravel the mystery behind EL-Cee and Iceman's plots.

Shigure loops one final time, to save Vera and stop Iceman from destroying the world.