a stepmother's marchen, kill the villainess, my in laws are obsessed with me (preview is kind of goofy but it gets SO good) and death is the only ending for the villainess. there r the only angst isekais i acc i love becoz the rest i feel like are too shallow/repetitive w the same mistreatment plotline
https://www.mangago.zone/read-manga/high_society/
https://www.mangago.zone/read-manga/the_villainess_lives_twice/
https://www.mangago.zone/read-manga/a_kind_goblin_s_bird/
https://www.mangago.zone/read-manga/i_lost_the_leash_of_the_yandere_male_lead/
https://www.mangago.zone/read-manga/when_the_black_wolf_calls_me/
https://www.mangago.zone/read-manga/generation_s_queen_ling/
Your eternal lies
(Historical but not isekai)
Where shit is serious and not all rainbows n unicorn PLS RECOMMEND SOMEEEEEE