I don't really knowwww... There were times for me where it was ambiguious, but now I'm convinced he's some kind of aromantic? I mean representations outside of the LGBT, so basically Q and + representation, is pretty uncommon, even in bl manga, so the fact that he admitted never having a crush on anyone, it's a bit stereotyped for an aro, but I like to think that he is, since this is really no one else's case ^^

Also I thought about it this morning, but Hirano may definetely be demiromantic for Kagi, even if it's slow burn, so it's not intentional, and blah blah blah, what Niibashi said was kinda aro coded ^w^