I could be wrong but I think it's intentional. He's battling serious depression and is so exhausted that he's walking around in a fog. I think we keep seeing him with the same expression because he's not feeling a lot of other emotions. He is so disconnected with what's happening around him because of the depression.
You maybe right, totally! he’s showing same expression in every feeling even when he’s looking at JK’s younger self photo which I wasn’t expecting I would see that expression bc in most of the mangas I would at least see a slightly smiling faces, so that I commented this. You have points!
I dunno, maybe I’m just overthinking thing but I feel like lately (a little bit way before lately tho) Dan’s drawing is really something (in bad way)… umm like , whatever he’s feeling or thinking or surprising , artist-nim drew only one expression , it’s starting to annoy me TvT I’m not throwing hates , really! It’s just … like … you see, really hard to ignore and it’s keep getting in my way of reading.