After barely managing to survive Number 96's attack, with the ability of Bacon Saver, Astral helps Yuma with his duel. Using the special ability of Heart-eartH Chaos Dragon, Dark Mist raises his Life Points to 7,500, while Yuma only has 500 Life Points remaining. Being unwilling to give up, Yuma and Astral merge into ZEXAL II, and bring out Utopia Ray and two new Zexal Weapons: Sleipnir Mail and Asura Blow. This allows Yuma to overpower Number 96's monsters and defeat him. In a last-ditch attempt, Number 96 uses the last of his strength to try and take over Astral's body, but Astral chooses to sacrifice himself to destroy Dark Mist, leaving Yuma horrified. This action severely drains Astral and forces him to retreat to Astral World, and he entrusts Yuma with the Numbers they obtained, before fading away. (thetvdb.com)