High Martial: From Red Eyes to the Eternal Mangekyo

[Decisive and ruthless + swords + illness + supernatural abilities + dark personality] In a world split between day and night, humanity scrapes by in the daylight while monsters run rampant after dark. Qin Yu transmigrates into the body of a sickly young man who coughs up blood just from walking, let alone cultivating to grow stronger. From the start, his childhood sweetheart publicly humiliates him, and a doctor announces he has only a month to live… Qin Yu feels like he’s been dealt the worst hand imaginable. Fortunately, the transmigrator’s passive ability kicks in. Ding! The Illness Conversion System has been activated! Complete System missions to convert illnesses into all kinds of top-tier, powerful supernatural abilities! Qin Yu: “If I can’t cultivate, why not just use supernatural abilities instead?” Convert red-green color blindness into the Eternal Mangekyo! Convert hemophilia into blood manipulation and slaughter your enemies! Convert lung cancer into a god-tier breathing technique! … While everyone else desperately cultivates, Qin Yu reclines on his sickbed with a slight smile: “My name is Qin Yu. I’m a patient, and I’m about to have an episode.”