I Married a (Promiscuous) Tan Gal JK from the Countryside

Koichi quit his job and became a novelist. However, he could not think of any topic and was unable to write a novel. One day, in order to concentrate on his novel, he decides to move to the countryside to live in the atelier owned by his grandfather. Koichi is stunned by the empty countryside, but there he meets Ichika, a tan high school girl who is out of place in the countryside.

She's sexually uninhibited, promiscuous and she'll let anyone have sex with her right away, but she also has a strong desire to get married, and she's good at cooking and managing people. Koichi is attracted to Ichika, and before he knows it, he wants to make her the heroine of his own novel. For some reason, I ended up living with Ichika!!!?