A Wish Entrusted Eve revealed to Hiroto of her origins and that she was absorbing the bugs Sarah was inadvertently creating, but after the First Coalition of Volunteers battle (which Hiroto joined in), she had reached her limit and the bugs risked being released, which would destroy GBN. Hiroto, despite his pleas to Eve against dying, reluctantly allowed his Core Gundam to give her a fatal shot remotely by borrowing her EL-Diver power. As she was fading, Eve asked Hiroto to always be someone who helps others, and to help EL-Divers like her, espeically her little sister, Sarah, who was captured by Avalon, his own force, the day after. On the night Riku called out to Sarah and right after he left, it's revealed that Sarah and Hiroto spotted each other briefly before she went back inside, with Hiroto unaware the way that was found to save Sarah involved something Eve would have rejected. Hiroto later joined the Second Coalition of Volunteers battle against the original Build Divers right when Hyakki joined in for third party reasons. Hiroto, completely withstanding the giant impact, aims and locks on Riku. Just when he was about to snipe Riku's battered Gundam 00 Sky, he remembered his promise to Eve and her last words, and thus refrained, redirecting his shot into the ground. After telling the whole story to his friends, Hiroto voices his regret over not doing his best to help others like he promised to Eve, and is comforted by May, who encourages him to cry freely. Hiroto later apologizes to Freddie for pretending that he and the others were the real Build Divers. Freddie, on the other hand, reassures Hiroto that he kept his promise to Eve by helping his people against the One-Eyes and is happy for meeting them. May reminds Hiroto that Sarah and all the other EL-Divers could flourish in GBN because of his choice; upon hearing May, Hiroto realizes he was not only keeping his promise to Eve, but that all of his actions benefited everyone one way or another, and since GBN's sea of data is much closer than heaven, Eve has been watching over him all along, upon which he smirks in relief and is happy with his four new friends. Elsewhere, a deranged Masaki fights his brainwashing while defending the Eldorans against the One Eyes' forces while his health back in the real world begins to decline.