I don't think the age difference is the problem, the problem is that Kotaro grew up with an obsession with Mizuki which Mizuki, knowingly or not, took advantage of and nutured. Say what you want - that's still ... Miza
And others say what they say, i guess... however, this is relationship meant to be glorified. I hope and think most people would find this weird irl, when the older man doesn't look like a sexy-cute himbo-twink lol
Everybody else is complaining about the age difference but have u seen other peoples parents age gaps? it’s normal yall chill