Seraphina – fiery angel
Sera has been 17 for a long time. 115 years to be exact.
She is a “special project” for Diablos and he’s keeping her 17 for a very special reason.
People can’t voluntarily give up their souls until they turn 18 and Diablos can’t afford to lose Sera.
Every time she approaches her 18th birthday he finds a way to kill her and reincarnates her again in another place, another family, another situation with a new set of memories implanted in her head.
Sera is dying of kidney failure, and Diablos has made sure there are no donors. She will die before her 18th birthday and just because he can, it will be a painful death for her and her family.