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I'm trying to remember the name of that shoujo manga where the MC would reincarnate in the past and then take revenge on her sister (it was something like that!)
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do u mean "The Villainess reverses the hourglass"??
https://www.mangago.zone/read-manga/the_villainess_reverses_the_hourglass/
Guys does Manga Go has this manga: The villainess wants a divorce???
it should do
https://www.mangago.zone/read-manga/survive_as_the_hero_s_wife/ ?