Tolong jelaskan mengenai "Mizutama Moyou" dari Oide Shampoo

Mikumi Ando, Marika Ito, Nene Ito, Misa Eto, Yukina Kashiwa, Hina Kawago, Mahiro Kawamura, Asuka Saito, Chiharu Saito, Seira Nagashima, Himeka Nakamoto, Ami Noujou, Hina Higuchi, Mai Fukagawa, Rina Yamato, Yumi Wakatsuki, Maaya Wada