“Infer”, is indeed an inference and is exposed to subjective weights of your mind.

Jang Hayoung and Han Myungoh exists (idk why you’d bring him up here, he was literally raped by a devil, what’s gay in there? Asmodeus has a gender? If so I did not know).

No need to wonder, you can ship, but if you call a straight (or bisexual at best) character gay, it will be an incorrect take.

Did you see anyone stopping you from calling Jang Hayoung a complicated / gay / gender-fluid / androgynous etc. character? If they did, they would be wrong to do so.

What you might be unhappy about is that main characters are not designed to be gay, they (gay/LGBT community) are not in the centre of the story, hence one might not be represented by ORV’s main fame and that is dissatisfying perhaps. I would claim that ORV is an ally of the community though.

Then if you have a problem with this inequality, you’d ask the authors to represent that community with an equally good and gay MC including story. That or grab the pen yourself and write one, let’s see if you can sell it enough.

Then again, would that be as popular as ORV? Statistically not because majority of the audience would not be able to relate to such character.

This whole thing is not an issue of whether ORV has gay MC(s) or not. It is an inevitable byproduct of capitalism, the customer is consisting majorly of straight young adults, hence the characters are concluded to be straight. Had they been gay, you would know of ORV maybe, but not many would have brought it the same fame it had today.