It's mostly because a lot of yaoi don't like labeling or stating their lead guys as "gay" or "homosexual" (try thinking of some yaoi that do that it's hard and even here it is just heavily implied neither characters ever mention that they're gay) they just have them have gay sex. Sometimes the gay sex is excused as "I'm not into guys ew I'm just into male person A and like having sex with male person A so really male person A is the exception not the rule."
Nah ik, it definitely is common. I actually can list a decent amount that have them state/realize that they're gay cause I prefer those over the "gay for you" trope. I still think it's goofy that this calls them straight, especially considering their partners are listed as bi/gay lol
I don't get all the hate lmao this was cute? I didn't like the shit with the director and this isn't the best thing I've ever read but they're a cute couple and the art is good. Kinda generic plot but again, the couple is sweet and they're cute so I'm not sure why all the strong hatred. No accounting for taste I suppose
It is goofy that both Hajime and his coworker are listed as "straight" in their character profile despite both getting with guys lmao like I don't think that's how being straight works.... Heteroflexible I guess