Ryo Nishikido
The song, Ai Deshita., is a standard pop-rock ballad. It incorporates guitars, drums, and strings into the overall composition. Vocally, the song is split with harmonies between Ryuhei Maruyama and Yuu Yokoyama, Shota Yasuda and Shingo Murakami, and Subaru Shibutani and Ryo Nishikido on lead. Along with Shibutani and Nishikido, Tadayoshi Ohkura also sings solo verses.