I'm Standing on a Million Lives, Volume 3 (I'm Standing on a Million Lives #10-14)

We'll bring the Deokk soldiers to the pit of despair and kill them!" The ever-calculating Yotsuya carries out a very non-Heroic revenge for his friends - but when the truth about the world he's sent into is revealed, it is a heavy cross to bear for the fourteen-year-old. His next quest, sending him to the island of Jiffon, will make him question the very meaning of his existence!