This world is weak, incomplete, and broken.
Seventeen-year-old Osamu Dazai received a special gift, the "Complete ** Manual". On this night, he received his own memories from the main world and the future of countless parallel worlds.
So one sunny day, he pulled his friend Oda Sakunosuke to resign from Mafia.
…
Countless reincarnations
Emotionally out of control in despair, madness and on the verge of collapse,
finally
As worlds collide, worlds merge.
"Let us meet in the new world."
Purpose: Let us meet in the new world