
this is the only one sided love i know and the saddest story i know…… i mean like when it come to angst i always remember this one https://www.mangago.zone/read-manga/10_years_where_i_loved_you_the_most/
if u want another story tho
https://www.mangago.zone/home/mangalist/2454404/

1. Never Understand - shounen-ai. story is pretty sad but if i remember correctly, it was one-sided for a couple of chapters. must read. complete.
2. Sand Castle - personally, not my favorite. i actually hate this. pretty angsty. complete
3. Hellen - short story. complete
4. Lucky Paradise - for a story i don't like, i've suggested this twice now. complete
those are the ones i can think of rn

Love triangle / arrow (specially number 3, 5, 6 and 8):
https://www.mangago.zone/home/mangalist/2417008/
Everyone is in love with protagonist:
https://www.mangago.zone/home/mangalist/2417009/

https://www.mangago.zone/read-manga/love_letter_sakai_kunie/mh/v01/c001/ (sad end ngl)
https://www.mangago.zone/read-manga/yuuutsu_na_asa/
https://www.mangago.zone/read-manga/haikei_pass_jougi/ (this is fucked up. You decide whether to read or no)
https://www.mangago.zone/read-manga/by_my_side/
Any one side love BL manga/manhwa?
An angst one will be great! Bc i want to suffer(?)
Thank you~