"Make a child with me ---." Kotori a high school girl who was forced to play the role of a "fake" lover by the wealthy family, the head of the Takamiya family, Sei. Kotori who rejected humans from past trauma, but was squeezed by Sei and went to the mansion every day. In fact, there is a secret that cannot be told to anyone in the conquest ... She is gradually involved in the Takamiya clan's desire to leave the descendants of Sei. A clumsy and straight love story between a lonely girl and a lonely boy.