You Mock My Illness? The Demon King’s Whole Crew Spoils Me!

Xie Zhiwei wakes after nearly drowning and finds herself a sickly, unwelcome real heiress in a wealthy family. She has also acquired a dangerous aftereffect: she can precisely sense the emotions of people on the brink of corruption or death, and absorb their negative energy and pain. But every time she saves someone, the backlash strikes her own body...

The fake heiress mocks her as a sickly girl who won't live long, while her scumbag parents, ashamed of her, kick her out of the house.

Until one day, the highest alert in the supernatural world sounds. The monster-level leader who terrifies everyone pins her tightly against his chest, his eyes blood-red and his fury raging. “If anyone makes her shed so much as a drop of blood, I'll slaughter their entire family.”

Xie Zhiwei: ...I really just have a bit of a cold. There's no need to call an ambulance.