The world is a mix between historys strongest decipal street fighter and absolute duo and kagen ashura and that sumo anime
fuck it also add in rosorio+vampire and deadman wonderland
(After all the inmates get released mabie a generation or two after when a bunch of peaple have those powers running through there viens inherited
The mcs gear from absolute duo will be a gauntlet that is on both firsts one with a small shield and another without anything for punching and deflecting
The mc will start out in ryozanpaku
While going to absolute duo school then get transferd out
Then go to the school of resorio+ who after the dojo found out they laughed really hard and smiled like madmen encouraging him to go
The mc will not
The harem would be
shigure kosaka
Renka ma
and kisara
Yurie Sigtuna
Ingrid
Kure Karura
And moka
and mizure
No more girls after that thats max
Polygamy is legal in this world as the world had a plauge that wiped out a quarter of the world's population