Han Yu'er was an orphan, without a father or a mother. He grew up in an orphanage because of his unconventional character, but he was bullied in the orphanage. Although he felt that it didn't matter, it still made his friends feel distressed. His mother in the orphanage took care of him until he was 18 years old, and then asked him to move out of the orphanage as an adult and enter the university campus to get in touch with society. After he came into contact with the campus, he had a real brother and a lover that he could never imagine. Of course, it was not only his personality but also his gender that he could not imagine.