Manga Reincarnation no Kaben

Senji Touya was doing everything to strive for talent. She wanted to find it. Dancing, basketball, swimming, kendou, chess, and more. All his effort fail. He can't be the best. Once, haito, his classmate, comes to school after long absence. Senji thinks that she's the one with talent. Moreiver, it turns, that it's not just a talent. It's something that she took from herself in the past life. Those who did such a ritual are called "Returners".