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. (Source: Crunchyroll, edited)

The Monster Strike film will feature a character named Lucifer.

The Angelic Guard, who call the heavens their home, have been tasked with collecting the orbs scattered across the world. Lucifer—a leader of the Angelic Guard with a rebellious streak, said to wield power rivaling the Almighty—carries out her duty along with Uriel, also a leader of the guard. Together, they go about executing their mission, until Holy Magistrate Keter—the one who leads the heavens under the Almighty's will—tells Uriel of Lucifer's planned rebellion. Initially in disbelief, Uriel then learns that the accusations against Lucifer may be connected to an event that once threatened to shatter the heavens. (Source: Official YouTube Channel)