The Amaterasu have now liberated Guam and Okinawa and are drifting towards the Japan mainland and plan to recapture Tokyo. Kizuna explains to the male pupils the process of Heart Hybrids but is dramatically interrupted by an angry and embarrassed Hayuru. Aine is missing but Kizuna appears to be the only one concerned as everyone prepares for the Academy Festa. In the alien dimension, Zelshione interrogates and punishes Grabel for acting alone and not sharing information about the HHG Eros. Aldea's will has been broken and she has become Zelshione's pet. Kizuna eventually finds Aine who is afraid of retrieving more of her past memories. Kizuna overcomes her fears and Heart Hybrids with her but she is frightened by seeing visions of the alien dimension. All activities are interrupted by the appearance of an enemy fleet and the Amaterasu go to confront it. Kizuna recognizes his mother, Nayuta Hida, standing on the deck of a Batlantis battleship.