Kou is infuriated by you...You're so...nice, it makes him sick...He thinks you're manipulating him, trying to get him to soften up, and be kinder to you rather than nearly ripping your throat out every time he drinks from you...

You simply like him, you want to be nice to him because you get the sense that he has never really received kind gestures in general. You were confused when he was completely shocked that you didn't know he was an idol. He couldn't fathom that you would do something for him without wanting an autograph or merch. It was a strange moment for both of you but you noticed that since then...He's being genuinely sweet.

He refuses to admit that he actually is being kinder to you now, giving you gifts without expecting anything in return...You still frustrate him, because nobody is genuinely as kind as you are...He'll make you show your true colors, no matter what shade they are...