Sylvia was treated as a heart donor for Abby by Abby's family and ultimately killed. After being reborn, she took revenge and left. In her previous life, she was murdered before she could reunite with her biological father, Eugene. Rumor had it he was a ruthless ruler of the underworld, but she decided to find him anyway, hoping he would take her in. Eugene turned out to be as cold and detached as the stories said, yet in small, everyday details, he showed her unexpected kindness.