Two different high school children - a swimmer and an academic - set off on a quest together one summer.

• Nikkatsu Corporation
• Office Shirous
• Moka Kamishiraishi
• Kanata Hosoda
• Yuki Saito
• Etsushi Toyokawa
• Yudai Chiba
• Kanji Furutachi
• Tōru Shinagawa
• Hina Yukawa