When the famous tennis player Echizen Ryoma accidentally becomes the prey of Kamikawa Ye from the Kamikawa world. However, at first Kamikawa thought that Echizen Ryoma was just his prey. Unexpectedly, the time the two spent together made him fall in love with Echizen Ryoma. Kamikawa Ye is in conflict with each other. A series of funny, campus, and supernatural love stories are about to begin.