Go Nagai crossover movie.

Prequel to the TV anime series revolving around the "origin of the dream."

Based on a manga of Akatsuka Fujio. Batsugoro was the owner of a grocery store, Yaobatsu. When he tried to take a balloon hanged caught on the branch for a little child, he fell on to the ground to die. His son, Ataro, succeeded to the store, but Batsugoro was worried about him, and he remained there being a ghost. Ataro managed the shop alone, but soon his follower, Dekoppachi, began to help him. Being surrounded by strange characters such as, Nyarome, Butamatsu, the heart-warming story develops. (Source: AnimeNfo)

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.