Rino Sashihara
The member lineup for the title track and several supporting B-sides was determined by the results from the annual election held by AKB48 and its several sister groups (in 2015 it was called "AKB48 41st Single Senbatsu General Election"). Rino Sashihara, having won the election, serves as the "center" (choreography center) in the title song.