The 2009 single "Hatsukoi Dash/Aoi Mirai" marked the group's debut, establishing their identity with upbeat tracks that became representative of the idol pop sound of the late 2000s. Both songs were used as theme music for the anime series "Anyamaru Tantei Kiruminzoo."
- "Hatsukoi Dash" was featured as the first opening theme for the anime series "Anyamaru Tantei Kiruminzoo," which aired in 2008 and 2009.
- The single was released on January 28, 2009, by PONY CANYON INC. and reached number 13 on the Oricon weekly singles chart.
- This release served as the group's first official single, introducing the seven members chosen from AKB48 to the public as a distinct entity.
Watarirouka Hashiritai 7 is a Japanese idol group formed in 2008 as a sub-unit of the larger AKB48. They were known for their energetic performances and tie-ins with anime and television.
Tracklist
