Hachi + Araine - Nightmares

Following the events of the first book, Hachi and Araine are tasked with finding the remaining unopened Tau-born vaults across the Sol System, as they seek to complete their mission and reunite with loved ones. Their journey takes them across the universe, where their decisions have significant consequences. Meanwhile, Lamant and Mira work to bring back someone important to Hachi, only for new challenges to emerge with the appearance of an unknown ship on the galaxy's edge.