"Ika Summer" was used as in various commercials for a new brand of makeup named Kanebo Allie. The B-side song is a rearrangement of a single from their indie album named SJK06. The title is a pun; the word ikasama means "fake", and "summer" is pronounced almost the same as "sama" in Japanese, thus "Fake Summer", which the band claims was used because the theme of the song is summer but it will be released before the season. The official title literally reads "Squid Summer" though. On its first day, the single reached the third spot on Oricon's charts and would reach the same spot for its first week.