sorry, this is not a webtoon but i just wanted to rec this because im not the one to cry https://www.mangago.me/read-manga/july_found_by_chance/ dont get too shaken by the art, take your time to read and understand it (if you feel like reading it). i dont know what to convince you but lmao i had a mental break down
try reading visible only to you
https://www.mangago.me/read-manga/will_you_marry_me_again_if_you_are_reborn/
https://www.mangago.me/read-manga/life_senjou_no_bokura/
https://www.mangago.me/read-manga/i_will_be_waiting_for_you_in_1999/
https://www.mangago.me/read-manga/back_in_time_to_you/
https://www.mangago.me/read-manga/a_cat_s_tale/
https://www.mangago.me/read-manga/july_found_by_chance/
https://www.mangago.me/read-manga/december_rain/
https://www.mangago.me/read-manga/the_horizon/
https://www.mangago.me/read-manga/oyasumi_punpun/
https://www.mangago.me/read-manga/an_uncomfortable_truth/
https://www.mangago.me/read-manga/my_childhood_friend_was_a_god/
https://www.mangago.me/read-manga/forever_honey/
https://www.mangago.me/read-manga/spring_snow_odongtong/
https://www.mangago.me/r/l_search/?name=Avogado6
All of this author’s work ^
https://www.mangago.me/read-manga/itonaga_kun_no_koi_no_ito/
https://www.mangago.me/read-manga/not_for_the_faint_of_heart/
https://www.mangago.me/read-manga/lifeless_man/
Any webtoons suggestion that would surely make you cry? Huhu