Considered a loser, Oosawa Junpei had a passion for astronomy but was academically challenged and lacking in athletic abilities. Despite the odds, he set his sights on winning over his long-time crush, Kido Karin. However, his hopes were dashed as Karin's twin, a top-performing scholar, a Junior Japanese soccer player, and quite attractive, overshadowed him. Adding insult to injury, Junpei was caught peering through his telescope at Karin as she changed by her twin brother. Following this, he found himself on the roof where an alchemy circle had been drawn...