Eighth Wonder (「八握剣」?; Yatsuka no Tsurugi; lit. "Sword that spans eight grips") is the fourth Divine Instrument of the Glaive class Amaterasu obtains. It is the second most powerful Glaive, only surpassed by Thunder Edge. It has the powerful slashing strike of the Glaive class of Divine Instrument, and also grants Amaterasu the ability of Ink Bullet when equipped.