Sota Mizushino was watching the anime "Elemental Symphony of Vogelchevalier" in his room when suddenly, Selesia Upitiria, a character from the anime, and a mysterious girl dressed in a military uniform appear in his room. Sota gets caught in the middle of their battle and follows them to Yoyogi Park, where Meteora Österreich, a character from the game "AVALKEN of Reminisce", suddenly appears.

Sota tries to fulfill Selesia's wish to meet the Creator of her story, and contacts Takashi Matsubara, the author of "Elemental Symphony of Vogelchevalier". Selesia waits for Matsubara at Ikebukuro when Mamika Kirameki, the main character from "Magicalslayer Mamika", suddenly appears. Mamika, angry at the Creators who created sad stories, and Selesia, who opposes her, start battling...