Fourteen-year-old Chinese girl Su Jin turned into a Japanese girl Sumire Yanshita due to an accident.
She, Su Jin, is good at nothing except studying well. She doesn't know how to wash and cook, and she doesn't know how to play, calligraphy, and painting. She doesn't like to go out. She likes comics and novels, but she's not crazy about them. Her personality is not really a good person, nor a really bad person. She sometimes spurns her own hypocrisy, and she never trusts people easily. Although she is fourteen years old, she is extremely mature, which is one of the few advantages.
She, Yanxia Jin, has a pure soul, is kind to others, and has an adorable appearance that makes her loved by everyone. However, she has the same hobbies as Su Jin, and also likes novels and comics.
They were originally two people with almost completely different personalities. Due to an accident, Yanxia Jin disappeared. From then on, Su Jin became Yanxia Jin.
When Su Jin knew that she had come to the world of "The Prince of Tennis" and "Ouran High School Public Relations Department", she could only face it with a normal heart, because she was not a genius heroine, and she did not want to die young. She was just a passerby to these youthful princes and princesses.