Ayumu is an OC by Detective88 and Subuku No Jess who is Guu's love interest in the RMCF episodes of the Mystery Case Files series. Like Guu, he is a spirit who has a world in his stomach, but unlike Guu, his world is more dark and has a city like environment. Like Guu, he'd take on the form of a little boy, being 10 years old, but also takes on the form of an adult. He is voiced by Micah Solusod.
Not much is known about Ayumu yet, but will be revealed in "RMCF: Ayumu."
MCF Stories Edit
He first appears but he first starts a love-hate relationship with Guu until the Rookies got to know him and plan to hook them up. It takes them a while, but Guu and Ayumu become boyfriend and girlfriend anyways.
- RMCF: Ayumu(Debut)
- Ayumu would eat anything Guu would eat, however, his world is dangerous.
- His personality is siimular to Prince Derek from "The Swan Princess" and Ame from "Wolf Children". Ironically, his voice actor is Ame's from Wolf Children.