why does that even matter lmao the dude killed his family
no, you see, it is very important, because uhh, Kyou was the bestest friend 15 years ago, and we obviously know that friends we make at the prime age of 7 stick with us for life; so Shun-kun will sacrifice his girl friend (and watch her be raped on six 8k LG TV from all angles at the same time) to un-choke Kyou so that he can be good again.
Then they will all have a big laugh (except for the people who were killed and/or raped), say "damn that was crazy amiright" and live happily ever after together with that lesbian boss, whom they will also un-choke into being straight again.