Yumin is one of my OC's from a while back:

and her ability is unique to her! Well, I wouldn't call it an ability... it's more of a curse. Explanation: her "Curse" would be a delayed immunity to death. She can feel the pain inflicted by wounds, feel the call of death and everything, and then dies... three days later she will have regenerated and awakened as if nothing had happened, she does technically die, but she doesn't stay dead... I didn't say "Immortality" because she can pass away from old age somehow.

similar to Deadpool I guess, but not. :D