The series "Gavan Off-Duty" is a spin-off project that may or may not touch upon the everyday lives of various Galactic Federation Police members beyond what is depicted in the television series. These are their stories. We see the Gavans face trials and hardships on the job day and night, but what about when they are off duty? Little do they expect the epic events that may transpire in their downtime. This is not a record of their battles, but of the stories to be found in between.

Around Haruka Hara, who works for a video production company, an invisible anomaly begins to quietly spread. An internet meme that her colleague Honoka eagerly pursues—a rumor that something "happens" on July 5, 2025, at 4:18 a.m. Is it a coincidence that day coincides with Haruka's birthday? Haruka starts to experience paranormal events and finds a video on TikTok that mirrors her experience. Based on the manga by Ryo Tatsuki "The Future I Saw" which featured a prophecy predicting the great east earthquake. This tale follows another prophecy from the book.