He did got tgt w shuuchi in the sequel called Shite! Haha I can only find the Chinese version for it but well all the relationships in that sequel r pretty much tangled tgt. When they were tgt there were temptations n all and it's mostly on kazu's part so..
Replying to my comment as a update HAHAHAHAHA
could u please send me the link? Plzzzzz
https://www.177mh.net/colist_195820.html There ya go friend
Is it just me but I kinda wish kamishiro would get a divorce w his wife yukie (most prob bcuz she ran off w another man or smth) and then get tgt w kazu. Kazu seems like he's taking interest in him remembering his first name "Shuichi" ^^ heh