The key to it all (Tokyo revengers)

Well, I noticed there aren't many tokyo revengers books out there but I'm doing this mostly for myself.

Contains major manga spoilers.

The storyline is changed because of the fourth Sano sibling. Most part of the story will be changed. You can call it a male reader book but you just can't change anything, which I don't think you can call a male reader book but anyway, that's all.