https://www.mangago.zone/read-manga/rental_onii_chan/
I teared up quite a bit reading this one
Maybe jazz for two or killing stalking
I cried every chapter
https://www.mangago.zone/read-manga/will_you_marry_me_again_if_you_are_reborn/
https://www.mangago.zone/read-manga/ways_of_parting/
https://www.mangago.zone/read-manga/getting_to_know_grace/
https://www.mangago.zone/read-manga/10_years_where_i_loved_you_the_most/
https://www.mangago.zone/read-manga/kiraide_isasete/
https://www.mangago.zone/read-manga/back_to_school/
https://www.mangago.zone/read-manga/cover_up/
https://www.mangago.zone/read-manga/incorrigible/
I NEED SOME SAD MANGAS THAT MADE U CRIED ALOT idc what genre but I NEED IT SAD