For me it's something about their expression. When they smile they look like the joker
Yeah their heads are too big, they don't do that classic anime kinda sharp chin, their lips take up too much real estate on their face, because of the artist's art style most of the characters we've seen have the same face making it difficult to distinguish between them. The ukes big head is especially noticable in that full body climax panel as it just feels like they should've shrunk it.
Exactly
I noticed that too, I thought it was just me
Something about the anatomy really throws me off. The heads are like... too big? And in some scenes the chins are just too big? Hard to focus on the "plot"...