Kill the villainess
these are pretty all non standard to me
https://www.mangago.zone/read-manga/bitten_by_the_dog_i_abandoned/
https://www.mangago.zone/read-manga/i_will_become_the_villain_s_poison_taster/
https://www.mangago.zone/read-manga/how_to_survive_as_a_maid_in_a_horror_game/
https://www.mangago.zone/read-manga/the_beast_tamed_by_the_villainess/
https://www.mangago.zone/read-manga/living_as_the_tyrant_s_older_sister/
https://www.mangago.zone/read-manga/the_emperor_reverses_time/
https://www.mangago.zone/read-manga/death_is_the_only_ending_for_the_villainess/
https://www.mangago.zone/read-manga/secret_lady/
https://www.mangago.zone/read-manga/i_want_to_be_you_just_for_a_day/
any non boring isekais, reincarnation or going back in time stories that arent super cliche. Smth similar to The Broken Ring : This Marriage Will Fail Anyway or A Stepmother’s Marchen?