Momonga left. The denizens of Nazarick grew mad with despair, and spread death and desolation into the New World. Twenty years later, humanity is on the verge of extinction. Into this hopeless situation, six heroes will rise. They are the Supreme Beings, players brought here from Yggdrasil Mk.2. What will Momonga and his friends see, in this twisted world remade by their children?

He wasn't sure what happened. One moment, Hatake Kakashi was relishing his retirement period. The next thing he knew, he was standing in the middle of a pentagon drawn in blood, next to a corpse, with extinguished candles around him. What, he thought. He didn't even know he was summonable. OR: Kakashi crashes into the bnha world and tries to make the best out of it.