Responses
Not exacly similar but
https://www.mangago.me/read-manga/galge_no_sekai_de_shinyuu_ga_ore_o_sukida_to_iidashite/
they had crush on the same person but ended up loving each other (aka rivals into lovers):
https://www.mangago.me/read-manga/if_you_hate_me_that_much/
Can I get recommendations with manhwa have similar vibe to this pls? https://vm.tiktok.com/ZMdsfuCfb/