I'm literally only here to read @Plykiya 's comments, not even that interested in this series, mostly skimreading it, also can't remember how i found out about it, probably from front page or random button
The camera is always pretty low in this chapter, but we see that Kei's top is always pretty loose. From Kouhei's height, and the fact he can't stop staring, he's probably non-stop staring at Kei's nipples. Not surprising that he would have lewd thoughts