Responses
in chapter 23 (pages 35 and 36), mok is shown to hunch a bit when he stands, and nanjo genuinely thinks he's taller than him until mok actually stands up straight: https://www.mangago.me/read-manga/the_boundary_of_delusion/uu/br_chapter-302382/pg-35/
I'm sure, considering mok's state rn, he's definitely not at all worried about his posture lmao

But why did they make Mok smaller? Or kinda like twinkified? Nanjo is taller. I mean I get that Mok got depressed and thinner but that shouldnt change his heightttttt?!