Episode 0 of Monsuto Anime. It is the first item in the franchise to be completely animated in CG. The big threat is passed, but the gang's still got little threats to handle. The monsters are becoming a part of daily life, but there's one big thing missing: Oragon. One day, a powerful monster appears in the middle of town. It's got Oragon inside!

After an invasion by the Vivolian army, the Sprite Himawari and her childhood friend Tsubaki flee their homeland of Floria for the town of Romton. There, they live out their lives in peace... for a time. One day, Himawari's friend and fellow Sprite Ajisai is kidnapped by mysterious strangers. Now Himawari and detective Tsubaki set out to rescue her, but find the dreaded Vivolians standing in their way! A 2D animated special episode aired on the Monster Strike anime channel, promoting the Monster Strike game debut of the Flower 4 series. Despite this, the storyline is standalone and unrelated to previous Monster Strike anime installments.

Golden Week Special episode of Monsuto Anime. "Change the world with music? Foolish." Lucifer's world stops after her band disbands. Meaningless days pass, until she meets her cousin Satan and his bandmate Ibaraki Douji. They ask her to join their indie band, the "Wicked Pistols." Satan talks about his dream of going major after winning the MONSTERS ROCK competition, only for Lucifer to reject him outright. However, Lucifer's heart begins to thaw after a certain event...

Due to the violence portrayed in the Cowboy Bebop world and violence in Japanese schools, the series was briefly cancelled and an extra session was created as a final episode to the first thirteen episodes aired. Called "Session XX: Mish-Mash Blues," a compilation of clips from previous episodes, it aired on June 26, 1998 on TV Tokyo. The episode was never released on DVD. In it, the characters provide a philosophical commentary and end with the words: This Is Not The End. You Will See The Real "Cowboy Bebop" Someday!