quite hard to NTR Hachiman if you think. Yukinoshita and Yui... I can see Hachiman being kinda meh about them getting with another man. Now, it would be a different case if it was Saika Totsuka, that would hit Hachiman hard. Or maybe not. In Kouta's case, that is. In his view, it would be a trap x trap situation, something akin to yuri, so he would find it quite hot, just like men finds lesbian sex hot.