Following AKB48's July concerts at Yoyogi National Gymnasium in Tokyo, it was announced that the headlining "senbatsu" members for the 19th single would be decided in a janken (rock paper scissors) tournament among AKB48 members and four representatives of AKB48 trainees (also known as research students or kenkyuusei) also decided by janken.

The tournament was held at Nippon Budokan on September 21, and was won by Team K's Mayumi Uchida, who was given the center headlining position.

All lyrics are written by Yasushi Akimoto(Bold indicates front members who appears on the cover of theater version of the single, number in brackets denotes final placements in the Janken Tournament) Only 4 senbatsu members who appear in this single have appeared in the senbatsu lineup for the last single, Beginner (Haruna Kojima, Takajo, Atsuko Maeda, Kasai).

Kana Kobayashi and Natsuki Sato both reappeared in senbatsu after an absence of 3 years and 8 months (since the 3rd single, Keibetsu Shiteita Aijō).

Finally, other members such as Uchida, Ami Maeda, Tanabe, Nakatsuka, Sakiko Matsui, Ishida, Sumire Sato, and Chikano are making their first senbatsu appearance in an AKB48 single.