Dirección: Hiroyasu Ishida
Un día de verano, Kosuke y sus amigos deciden explorar un edificio que será demolido. Pero la aventura resulta ser más extraña de lo que pensaban: mágicamente, aparecen en medio del océano.
Mutsumi Tamura
Kosuke Kumagaya (voice)
Asami Seto
Natsume Tonai (voice)
Ayumu Murase
Noppo (voice)
Daiki Yamashita
Yuzuru Tachibana (voice)
Yumiko Kobayashi
Taishi Koiwai (voice)
Inori Minase
Reina Haba (voice)
Kana Hanazawa
Juri Ando (voice)
Bin Shimada
Yasuji Kumagaya (voice)
Rikako Aikawa
Yasuko Kumagaya (voice)
Nana Mizuki
Satoko Tonai (voice)
Aya Endo
Ferris Wheel Girl (voice)
Masaaki Ihara
Yuta Kumagaya (voice)
Junji Tachibana
Construction Worker A (voice)
Ryunosuke Watanuki
Construction Worker B (voice)
Anri Tachibana
Homeroom Teacher (voice)
Ayano Shibuya
Chieri (voice)
Minami Iinuma
Moe (voice)
Yuki Tanaka
Aoi (voice)
Yuki Kazu
Schoolboy (voice)
Haruna Mikawa
Schoolgirl (voice)
