Virtual idol unit [épeler] 4th Single ''Victory Song for...'' This work was written and composed by TAF, and 3 members of épeler, Yuzuha, Flare Rune, and ChumuNote, are in charge of singing. épeler, who have been competing in ''electronic'', will take on the new theme of ''Japanese-style rock'' for the first time and aim to make further leaps forward.