I like all of these because they're Moral dilemmas and makes you go "hold up."
incest:
https://www.mangago.me/read-manga/sora_o_daite_oyasumi/
https://www.mangago.me/read-manga/the_inheritance_of_aroma/
https://www.mangago.me/read-manga/samenai_yume/
Rape:
https://www.mangago.me/read-manga/bradherley_no_basha/
https://www.mangago.me/read-manga/the_view_beyond/
murderer:
https://www.mangago.me/read-manga/kami_no_kodomo/
eating disorder:
https://www.mangago.me/read-manga/shibou_to_iu_na_no_fuku_o_kite/
Bullying kink:
https://www.mangago.me/read-manga/ijimeru_yabai_yatsu/
parasites:
https://www.mangago.me/read-manga/parasite_in_love/
Moral dilemmas:
https://www.mangago.me/read-manga/kegare_no_nai_hito/
Cannibalism:
https://www.mangago.me/read-manga/shokujin_shokuyuujou/
Manhwa or manga with taboo topic like Incest, mental health, abortion, sa.
Which goes in depth, not like a incest (or other topics) story where the victim(?) accepts it in first go. I want something where the main lead debate with their thoughts, and think about the consequences. Psychological genre maybe.
Like https://www.mangago.me/read-manga/ouroboros_1/ ig