Ushio just transferred from a prestigious high school. While running an errand after school, she collides with Mitsunashi, who's known as a studious robot, and breaks his glasses. Afterward, Mitsunashi invites Ushio to join the Astronomy Club. Will love blossom under the stars?

Ushio was surprised when she suddenly got invited to join the Astronomy club by the national genius Matsunashi. He always seemed to be aloof and is even called a robot by some of their classmates. So Ushio decides to join the club with the hidden motive that she could learn of Matsunashi’s studying secrets. But then, she learns that she’s not the only one that has ulterior motives. Why did Matsunashi really ask her to join the Astronomy club?