yup
But why does he do that? He really love Zaizen.
They're not together, ofc?
I don't really understand what do you mean
Kiriya thought that he would never be able to get together with Zaizen, and Kiriya also did not know for sure if he understood what love really was. He probably dated other people because he wanted some intimacy and companionship. He does love Zaiaen, though, and if he is able to have a relationship with him, then he will probably be very content and happy!
I think Kiriya has relashionship with those women during the time he become yakuza and he doesn't like them, he just only want sleep decent but those women want to sex so he was forced to do it . He only can sleep decent when Zaizen by his side but Kiriya and Zaizen are seperated during the time
And i think seem like Zaizen and Kiriya have sex in the first time after many meetings since they meet again because in vol5 chap36 page 9
http://www.mangago.zone/read-manga/kachou_fuugetsu/tr/manga/kachou_fuugetsu/v05/c036/pg-9/ Does Kiriya used to have sex with those woman before?