Yakuza sanegiyuu

Giyuu is secretly the son of Muzan Kibutsuji who is currently a powerful Yakuza clan leader but right now Giyuu is living with the Tokito twins and had adopted them for a 4 years already, the two had just gotten into the next chapter of there high school life known for the adopted children of the PE teacher while also teaching Mathematics and English for seventh graders

Sanemi Shinazugawa had just been left of the whole Yakuza clan From his father who died from Sanemi's hands after he attempted to kill his mother but still couldn't save all of his siblings

Though Sanegiyuu isn't really close they we'll be after Sanemi's younger brother will get mad and cause a fight with another student during PE or something else..and maybe both

Caution this book well infact contain:

Smut
Gore
Dirty jokes
Mentions of Rape(based on my other book but diff)
Sexual harassment
Cursing
Figuting
and other