Watarirouka Hashiritai (渡り廊下走り隊, Team Running Through Corridors) is a Japanese pop girl group consisting of five members from AKB48, Mayu Watanabe, Aika Oota, Natsumi Hirajima, Haruka Nakagawa, Ayaka Kikuchi, Iwasa Misaki and Komori Mika. Under Pony Canyon, the group debuted in January 2009 with a double A-side single, "Hatsukoi Dash/Aoi Mirai." At first this group has 4 members, but now is 7 members.