I feel like it’s intentional because by the looks of it they both have a hard life and most people are emotionless and even apathetic. The most expression you get out of the mc is his inner thoughts or when his other side comes out and the expressions for the ml aren’t very much seen because it is focusing on how he should act towards the mc. He is a bodyguard so that does make sense if he doesn’t smile or blush or even smirk. That’s why the person with the most expression was that guy that lives near mc (I forgot his name)
I mean the Seme was expressionless from the start and the uke kid didn't have a life that he can show how he feel either ╮(￣▽￣)╭
lol the characters are so expressionless. Idk if it's intentional or lacking in ability on the author/illustrator's part but it could be improved.
Anyways, yay! we're finally getting some action again!!