The theme of Otoya and Eiichi's song is a "soul-shaking song." When Eiichi explains to Otoya that he must face his true self that exists deep inside his heart to do so, he stoically engages in writing the lyrics. However, gradually he becomes less and less like himself.

身为二重唱组合企划压轴，瑛一提议必须要是一首前所未有的曲子，强劲、深沉和激烈，足以撼动灵魂。而完美的曲子必须搭配完美的歌词，但负责作词的音也迟迟写不出适合的歌词而烦恼不已。此时，瑛一似乎发现音也平日的笑容底下有着不寻常的另一面…?

身為雙人組合企劃壓軸，瑛一提議必須要是一首前所未有的曲子，強勁、深沉和激烈，足以撼動靈魂。而完美的曲子必須搭配完美的歌詞，但負責作詞的音也卻遲遲寫不出適合的歌詞而煩惱不已。此時，瑛一似乎發現音也平日的笑容底下不尋常的另一面…?