I Pick up a Fairy at the Beginning, but Wake up as a Little Tsundere?

[Soul penetration, system, double cleansing, 1v1, contrast] (The male protagonist becomes strong first and then becomes weak, and the female protagonist becomes weak first and then becomes strong) Three years ago, Xie Yu accidentally passed through the mysterious spirit world and obtained the reading system. The more ancient books you read, the more valuable the rewards given by the system will be. Just when Xie Yu was about to grow up and become a peerless strong man in this world. Occasionally, a beautiful figure broke into his life. From then on, the waves gradually came, getting bigger and bigger. At this time, Xie Yu, who had made a new discovery, was sitting in the study and said softly to the person in his eyes: "Madam, I want to hear Kuroyukihime's story."