Kyoto University of Political Science and Law, Lu Zhengyu, the youngest professor at the law school, has already made a name for himself in the academic world at the age of only 28. He looks cold and distant, and seems to be repulsive to everyone, but he only indulges in every possible way towards Gu Qinghan, a freshman in law school. He has been eyeing this neighbor's sister since he was a child. In order to be her teacher, he even deliberately chose a teaching position. No one knew that this seemingly abstinent law professor had written Gu Qinghan's name all over his diary in private. He had planned everything and was waiting for the day when she would enroll in school. And when Gu Qinghan really became his student, he set up traps everywhere and quietly eliminated all people of the opposite sex who might approach her. This extremely possessive man was determined to make her his own.