Responses

I think a lot of parents would get shocked if another kid takes interest in theirs. It's not because they're both guys, it's cause parents can be overwhelmed when they feel like their kid is being stolen from them (just like what hagi-san said). They're just being overprotective idiot parents lol cause they love their baby boy
In this story and the one with Maki and Tatsumi I don't why they make a big deal or act weird about their kids (Ritsu's) relationship with Kanata. Who cares if the two kids end up as more than friends? Like you both are gay to, so why would you be weird about your kid possibly liking his friend, or the friend liking your kid when they are literally in preschool?