ONWARD TO VALHALLA Ikki and Team Kogarasumaru are in a bad situation–facing über-team Sleipnir in an aerial battle on the back of fighter jets, while the clock ticks down on a loved one being held hostage elsewhere. As the battle rages on, Sleipnir's members reveal their true nature as lab-created experiments programmed with a desire to fly. Can Ikki show them the way, or is he destined to be another disappointment?