During a school trip, Yogiri and his classmates are summoned to another world. The students are granted abilities except Yogiri and Tomochika. Suddenly, a dragon approaches!
Yogiri and Tomochika search for their classmates and arrive at a nearby town. Inside the city walls, the two meet a seemingly kind beastkin who has ulterior motives.
Masayuki releases zombies to run amok in the city! Meanwhile, outside the city, Lain devises a plan to see how powerful Yogiri's "instant death ability" really is...
The group heads to the basement of the Tower of Trials, where Theodisia's brethren are held captive. Meanwhile, on the ground, the Demon King's followers attack the tower.
In Yogiri’s childhood, Asaka Takato is assigned to care for and observe him. However, Asaka can’t stop him from being kidnapped and held hostage by the “organization.”
Sion orders sage candidates to kill each other until there is only one left. Meanwhile, Yogiri, who fell to the seventh layer of the demon world, aims to return to the sixth.
Yogiri and his friends go off script during the Sage Candidate Selection Battle to lure Sion out. Yogiri has a mission: find out how to return to his home world.
