When Idia reveals that his parents have asked him not to go home for a while after the incident of Book 6, Vil points out that they were supportive of Ortho’s enrollment at the school and of his own internship plans.
Idia concedes that they advised him not to go into the service industry for being a bad fit and Vil explains, “that’s advice they gave to you personally, regardless of the current circumstances.”
Vil may have been the only character who knew prior to Book 6 that Idia is a member of a branch of the family that runs the Jupiter Conglomerate.
Idia loses his patience with the kidnapped students, emphasizes that they have forgotten the chain of command and he is the boss, but Vil is unfazed, pointing out that it is his job to make sure they are treated adequately and quoting STYX’s core mission to emphasize his point. (Idia: “Do you all realize you overblotted and caused serious problems for everyone around you?” – Vil: “Certainly. But I never caused any trouble for YOU.”)
Vil surprises Idia by being interested in the video games available at STYX, saying that Idia’s assumption that “some sparkly, gorgeous supermodel” wouldn’t like video games is narrow minded, as “gamers exist in every field.”
Vil says that he does not own any handheld consoles himself, but he has occasionally played when offered one.
Vil thanks Idia for the “care package” that is the set of skincare products that Rook brings him from NRC, which Idia allows and personally delivers to Vil. (Idia: “I just threw a howling beast a bone. Had to calm him somehow.” – Vil: “You really do have a special talent for getting on people’s nerves.”)
When Epel wonders if Idia will do as they say after he recovers from his overblot Vil responds, “At Night Raven College, the rule is that the weak obey the strong. If we win, Idia will have to do what we want whether he likes it or not.”
In the final battle with the overblotted Idia Vil explains, “l’ve always wanted to be cast as a hero, just once. But there are no heroes or villains here. You and I are just classmates who are both fighting to have our own way,” saying that he will be the one to stay on stage until the end.
Idia tries to follow Ortho into the Underworld but Vil follows after him, saving both his and Grim’s lives but severely aging him up.
Vil explains he brought Idia out of the underworld because it is his job to close the Underworld gate and get the Cerberus System running again, ordering him to clean up the mess he caused.
Vil is first to say that they will be seeing Idia back at school, as he has plenty of work left to do on campus: “And I expect you to face up to all of it and not run away.” Idia reluctantly concedes.
Idia is delighted by Vil’s panicked response to hopping between dreams in Book 7. Vil threatens to smash the screen of the tablet he uses to communicate and Idia responds, “be my guest! Breaking a screen isn’t gonna do any damage to me. And remember, this is a world of imagination! I can basically give my tablet infinite lives.”
Ortho physically intervenes to end the argument.