Honkai Impact, please stop imagining it.

Lin Yu transmigrated to a pre-collapsed civilization and gained a strange ability: the more diseases he contracted, the stronger he became.
Mei, the childhood sweetheart: "He possesses extraordinary talent. Even though he is coughing up blood and suffering from a terminal illness, he can still dominate with his sword."
Aponia: "I have never seen such an upright and righteous person. Even though he was trembling and weak and could not even lift his sword, he still stood in front of the people to face the Honkai Beast that was enough to destroy the entire city."
Kevin: "It's a miracle he's alive. His existence is the best explanation for the saying 'the heavens are jealous of talent,' and it's also the greatest contempt for 'heaven.' The luckiest thing in his life was leading him to become a moth drawn to a flame, and the unluckiest thing was the same."
Su: "I can't heal the world, nor can I heal him."
Phyllis: "If I am the luckiest person in the world, then he is probably the unluckiest. If he hadn't been so weak, he might have actually been able to save the world."
Lin Yu: "You guys are messing with yourselves! Illness won't kill me, it will only make me stronger."
Eden sniffled, his face streaked with tears, and said sorrowfully, "He's right, he is that strong!"