
Anything with a main character that copes/tries to with their illness?

Romance webtoon with heartbreak illness that kills people http://www.mangago.zone/read-manga/love_deficiency/
isekai manga where the MC is born sick http://www.mangago.zone/read-manga/ascendance_of_a_bookworm/
sports shounen where the MC has an illness that one day will leave him without memories http://www.mangago.zone/read-manga/aoiro_ping_pong/
romance manga where the ML has HIV http://www.mangago.zone/read-manga/diamond_life/

There is a pretty girl who goes to a new school and this popular, fun to hand around guy teases her. I think she was looking for her prince or something. This guy also has a dangerous side to him and in the beginning a stalker sends her letters but she doesn’t tell anyone, he shows his dangerous side then. Also I believe his best friend likes her and her best friend likes his best friend. Her best friend thought she liked the dangerous guys best friend too and didn’t like her until this misunderstanding was cleared, any help is appreciated
Looking for this manga where the Mc loses their memory abt a murder they and their friends committed if I remember right? They all attend school and she keeps having a feeling of something forgotten or dreams idk? And her friends act sus because the murder happened while they were younger. Or maybe it was a hidden secret, something involving a tree
Hopefully I’m remembering right Lmaoo