Within the same manwha you mean ?
I remember having a déjà vu in every one of these stories :
https://www.mangago.zone/read-manga/love_in_kitsch/
https://www.mangago.zone/read-manga/mistake_lover/
https://www.mangago.zone/read-manga/i_want_to_go_see_the_stars/
https://www.mangago.zone/read-manga/wistful_summer/
https://www.mangago.zone/read-manga/a_man_who_gives_it_all/
um manhwa A and Manhwa B = same plot, like that
the way that all of this is love triangle xD (saw one with 4 ppl in the cover tho)
just a lil experiment:
does anyone know a manhwa/manga/manhua with copy paste plot? idc about how the characters look but you get deja vu when you read them because of how similar they are?