The protagonist began living by himself in the regional city because of his new job. One day, he noticed that Isana was having problems with her bicycle and helped her out. He wouldn’t accept payment for repairing it, so she offered to help out at his home in return. He agreed thinking that she wouldn’t actually follow through, but she actually came to his house to cook and clean for him. Then, as he helped her out with studying and played together with her, they rapidly got closer to one another.