Cycle Love.

When cartoonist Gu Wen Hao returns to his hometown, an ancient town, he magically meets Lu Ling, the villain character in his comics. She recognizes him as Xu Zhou, although 'Xu Zhou' doesn't remember her. This Lu Ling is completely different from the villain in his comics and knows many plots that the cartoon creator doesn't know. Later, Lu Ling finds out that she was not a cartoon character but a real person from ancient times. Lu Ling dies after saving Gu Wen Hao in an accident. When he wakes up, he finds that he has traveled back to ancient times and has become Xu Zhou, the person Lu Ling said he was. But in this time period, Lu Ling doesn't recognize him...