The Legend of the Legendary Heroes OP Piano - LAMENT〜やがて喜びを〜 (by PianoGo

Singer : Yuki Aira (結城アイラ) Opening Song : “「LAMENT ~やがて喜びを~」 (“LAMENT ~Yagate Yorokobi wo~“)“ Anime: “The Legend of the Legendary Heroes (伝説の勇者の伝説)“ Played by PianoGod93