asada nemui, too. I have this list https://www.mangago.me/home/mangalist/2659376/ but I also added stuff in the dead of night when I'm tired so sometimes it deviates from the theme (they're all good though, if you happen to be an omnivore). Dark theme I'd super recommend the "girls cocoon" (from memory) and the first one on the list — though I think these are psychological in a slightly different way. Overall I prescribe you Asada Nemui (can't recommend enough)

any mangas like this? dark and follow themes of self hm, im not particularly looking for anything with romance or anything bl (not that i rlly consider this manga to be a bl) just smth that follows the themes similar to this one like ominous and depressing