Responses

Depends who you ask, but if homosexuality is considered wrong in Japan, then yes?

Well, old bro is of age (above 20) while younger one is underage. So, in that sense, yeah...

Arent both of them underage? I mean, brother left for uni a year ago, so he is now, what 19?
they're step brothers instead of actual brothers, so would this still be considered wrong?