Rival wa Kimi no Ushiro ni  

Koigataki wa Kimi no Ushiro ni, My Rival Is Behind You, 恋敵〈ライバル〉は君のうしろに, 恋敵は君のうしろに

Rintarou Asahi, a 2nd year high school student, decided to meet Shiori at a park to express his love. However, as he prepared to share his feelings, he discovered that they were not alone in the park and someone had been following them all along.