Contract Marriage: Mr. Gu Has Been Planning It for a Long Time

In order to cope with the pressure to get married, I made an agreement to get married with my high school rival Gu Shen. We agreed to divorce in a year, but he changed his toothbrush into a couple's model and sneaked into my room in the middle of the night: we are a legal couple, but it is illegal to separate rooms. Later I discovered that he had no intention of abiding by the marriage agreement from the beginning.