Responses

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