The twins, while from a Japanese family, were actually born and raised in the United States. Their parents came to America for their masters degrees and ended up staying. The reaction had nothing to do with cultural norms.

This was really just Minoru’s personal quirk - the feeling of wet lips on his skin was icky. (There’s a reason why Ziggy’s always nuzzling him on the top of his head. That fluffy hair is a kiss shield!)

“I can see how that would be awkward, yes. But now you have a plan with which to structure your conversation. So it will undoubtedly be less so.” Isamu smiled. “Good luck!”

“Yeah, let us know how it goes!”