https://www.mangago.me/read-manga/happy_ending_for_the_time_limited_villainess/ -> not war crimes really but close enough
https://www.mangago.me/read-manga/your_majesty_please_don_t_kill_me_again/ (don't really remember much the ml is pretty yandere in the more recent chapters it's pretty obvious)
https://www.mangago.me/read-manga/i_tamed_a_tyrant_and_ran_away/ (ml pretty yandere but fl is super badass and older fl too im pretty sure)
honestly in a lot of stories the fl doesn't really truly beat the ml, at least not yet... completed stories aren't that common sadly.
STOP ASKING FOR WAR CRIMES WHEN FL LEAVES BRO
(i think theres one where the FL leaves the ogML and bro becomes evil tho fr) (i think its this https://www.mangago.me/read-manga/i_m_the_ex_girlfriend_of_a_soldier/ )
Hi, please recommend possessive MLs/yandere x strong FL who doesn’t fall in love easily, smart, mature, she actually escaped from the ML or outsmarted him, preferably manga.Thanks. (straight)
OR
Guy rejected by the FL then decided to commit war crimes"
OR
about husband chasing wife trope without the annoying female character