i skimmed it again and there were very vague scenes but you can easily tell that he's shy or not used to it. was it during their date? but that happened fast. was it during shimizu's confession? was it during his transition when he was at shimizu's age? but there's no indicator beforehand that he likes him nah man i couldn't pin point, next thing i saw he's already fapping off to him. it's probably in the beginning or whatever. idk why i'm analyzing ueno's feelings so much

this was so cuteee but the time when the chief started to feel the same way as shimizu was vague and kind of shallow ngl, it's probably bcs it's 4am now that's why i didn't catch it or it wasn't shown quite well as the story progressed