Mori Ogai, a diligent and hardworking middle-aged man with ambition, serving Yokohama's Mafia.
In another timeline, he is a retired orphanage director, enjoying a leisurely life raising children.
In a collapsing world, to ensure the Child of the World grows up safely and becomes an ambitious, idealistic savior...
The World Consciousness decides to find a gentle, kind, wise, and experienced elder to nurture and guide him.
Unfortunately, fate has other plans. The World Consciousness gets the coordinates wrong. The chosen mentor isn't the retired Mori from the Beast timeline, but the ambitious Mafia boss Mori Ogai, still in his prime.
Mori Ogai: ...I can't handle this at all.
Send me back to build up Yokohama!
To finish the task as soon as possible, he becomes a priest at a church and chooses a gifted boy in Meteor City. The boy is poor and has had a rough life, so surely he'll grow up safe and sound and save the world in no time.
Chrollo of the Phantom Troupe, just about to wipe out his clan: ...There's no saving me at all.
Then the problem must be that the boy's background was too harsh. Convinced he couldn't raise a child whose personality was already set, Mori Ogai chooses another gifted boy in the ninja world, one from a well-off family with a gentle temperament.
Sasuke Uchiha, the clan leader's youngest son, whose clan was massacred last night: Don't even think about it!!! I hate this world!!
Mori Ogai: ...
After repeated failures, Doctor Mori finally decides to choose a child he knows best. After going around in circles, he returns to Yokohama, planning to get a certain boy to complete the task as soon as possible.
Osamu Dazai, just forced to defect: ...Are you serious, Doctor Mori?
Mori Ogai: ...Well...
And that's the story: a light comedy about saving the world and raising a child! It brings together several worlds, and Doctor Mori's ability will have some very interesting effects...
Theme: Working hard to make a home