The beginning of the misunderstanding? leading to the Nukkun x Yanami ship and, much more low-key, Nuku x Remon as well. At least that one finally got confirmed even if it hasn't actually launched yet; Anna gonna hafta do more than just drop hints in second year.
"This is why you don't have any friends" is so real
I hate these tropes where the "unpopular MC" and the "Idol girl" have a falling out because MC says "waah waah it wyl hurt ur reputashion if u stey wit mee" and girl walks off all mad.
Like bro, just say "nah I like chillin wit you idgaf about none o that" how complicated is it
If you feel dissatisfied with how the conversation ended and feel like you still have to clear things up, make them stay and talk to them. You might need to shoot their legs so they stay, but at least you'll be able to talk to them and clear the issues you had. He shouldn't have let her go like that.