AKB48 brings the 55th single. The title song is performed by selected 22 members and Rino Sashihara performes in the center. B-side track is a song to commemorate the graduation of Rino Sashihara. Each type includes an exclusive third track ("Shitsuzensei" by IZ4648). Comes with a bonus DVD featuring music videos of the first and the second tracks (subject to change). Regular edition comes with a photo.