A summary movie screened during Czech Republic’s Anifilm 2018, and later made available on YouTube for a limited time. Features an alternate ending from the TV anime.

In the film, butterfly warriors suddenly appear in Yamabiko and snatch away Hana Kappa’s mother and others. Hana Kappa and his friends head out towards the mystery-filled land of butterflies. They overcome obstacles such as mountains and deserts and along the way, encounter a mysterious boy named Poru. (Source: Anime News Network)

Unsuccessful takes of episodes from the main series.

An extra episode included with the Blu-ray.