Responses

I personally dont think he does, because on page 23 he said "It's better to stick with a set partner anyway" which implies that he will have 1 sexpartner so it would be a little weird if he suddenly has multiple after he said that, also he got angry when he thought the guy took him as someone "easy" so I think and hope it won't happen ~

http://www.mangago.zone/read-manga/all_night_long_muno/mf/c001/23/
I think he has only black haired guy, with the occasional side dishes.
Do you think that black haired guy is going to be sex friend of others or he will be satisfied just with one sex friend?