Details Details Type MemberPiece Size 99999999 Content An item used to Awaken Natsume Izawa "Six Strings against the Light" Uses 1 Rank Up 1 1 → 2 ×60 2 → 3 ×120 3 → 4 ×180 4 → 5 ×240 Total ×600 光に挑む六弦