KAZUHA team! sadly he's not the host, he is just one of the alter. Meanwhile Rei is the host of the body. So, uke fall in love with the host not he doesn't love Kazuha but pity him.
Update: chapter 10 is a mess
More update: /
it kinda more trigger to threesome and confusing freling for me ... some angst i guess
Adam no Rokkotsu