Responses

Maybe it was difficult to tell cuz he didn’t want Rei to bear the responsibility to having a gay dad. In Japan homophobia is pretty intense and kids get bullied for having any relations to a gay person (which is sad) and so he probably wants Rei to avoid any scandal. Also because Rei was kind of an accidental child so he probably dudn’t want to see his son sad by any means.
i wonder why they didn’t tell rei who his dad was? i guess it was because he’s gay but they could’ve just told him they weren’t together?? i would much rather have parents that aren’t together than not knowing who my dad is