Prince of Tennis: A Little Shallows, A Little Deep

In her previous life, An Qian was hit and killed by a car while helping an old woman cross the street. Just before she died, she was bound to a System. Since she died while doing a good deed, the System rewarded her with a chance to be reborn. As long as she completes her missions to win over her targets, she can regain her life. An Qian is sent to the world of Prince of Tennis, where she must win over Yukimura Seiichi, Atobe Keigo, and Tezuka Kunimitsu. But... The System never told her that the body she'd regain after succeeding would be a body from the world of Prince of Tennis...