Oosawa Junpei is what people consider loser: Astronomy Fan with bad estimates, and he is also terrible in sports. Although it seems impossible, he is trying to reunite with Kido Karin, his long-standing love. Unfortunately for him, Karin has an ideal twin brother, which is an experienced player in a Japanese younger football league, first-grader and, of course, is also beautiful. From nowhere to Karin asks Junpey to go with her to the planetarium, and Junpey caught on espionage in the locker room of Karin with a telescope Brother Twin Karin. Then they raise it to the roof, where the circle of alchemy is drawn ...