Sword Warriors, but Building a School in Jujutsu Kaisen

It's a very cliched plot: Kamisato transmigrates into the manga he's been following and becomes someone who never existed.

The good news is that he has a golden finger. He brought the games he played in his previous life with him, so he doesn't have to worry about dying at the hands of some bizarre curse.

The bad news is that he's become a Master. Apart from borrowing the bodies of the sword warriors, he can't leave the keep's tower even for a single step.

So, to leave the keep and enjoy life, Kamisato is forced to put on the sword men's secret identities and set off down the road of roleplaying and earning impression points, never to return.

And so,

An overgrown man-child meets a certain prank-loving Maru. The two hit it off, sharing the same rotten streak, and immediately blow the roof off Jujutsu High.

A certain funny-haired, squinty-eyed man meets a shy, timid child who raises five tigers, and starts life as a dad ahead of schedule.

A certain gambling addict and scumbag meets a lucky young man with a sweet disposition...

Everyone rolls up their sleeves, eager to start digging and steal someone else's people. Kamisato quietly pokes his head out: Has anyone heard of "Honmaru Swordsmanship High"?

Kamisato: You haven't? Good, because I just made it up. But...

Kamisato: Nobody's stealing my people!!!

Theme: Hard work pays off. Never give up hope, even in adversity