O, Brother, Who Art Thou?.As Duskmon and Beowolfmon continue to fight, Patamon leads the rest of the gang to Koji but Cherubimon traps them. Eventually they manage to escape by digging their way out. As Duskmon is losing, Cherubimon intervenes and gives him the Beast Spirit of Darkness, allowing him to evolve into Velgemon. Velgemon is more than a match for Beowolfmon and defeats him, with Koji barley escaping an attack that would've killed him. Before Velgemon can finish him off, Ophanimon intervenes through Koji's D-Tector and reminds Velgemon of his life in the human world: he is actually Koji's long-lost twin brother Koichi who found out he had a brother not long before from his dying grandmother. He followed Koji to the train station but missed the elevator and ended up falling down the stairs before somehow ending up in the Digital World. Confused, Velgemon flies off, leaving Koji alone.