Ten years ago, the hero Max defeated the Demon Lord. In order to regain his power, the Demon Lord went into a deep slumber...but when he awakens, his body is only a chibi version of its fearsome form. Now curious to see what his enemy is up to, the Demon Lord visits Max, only to discover the mighty hero living in a dirty one-room apartment. The Demon Lord decides to move in with Max and help his old enemy become a formidable opponent once more!

First-year high schooler Midori Asakusa loves anime so much, she insists that "concept is everything" in animation. While she spends her time doodling endless ideas and settings in her sketchbook, she hasn't taken the first step to creating anime, insisting that she can't do it alone. After Asakusa's money-loving best friend Sayaka Kanamori notices her genius and drive – and when it becomes clear that their classmate and charismatic fashion model Tsubame Mizusaki wants to be an animator – the energetic trio start an animation club. Together, the three aim to realize the "ultimate world" that exists in their minds, as they come to see the power that fiction and imagination have on their lives and the world around them.

With no more death flags in sight, personable but dense Catarina Claes is finally able to lead a peaceful life surrounded by all of her friends and family. For that reason, she is determined to enjoy the school festival to the fullest without any concern on her mind.

Unbeknownst to her, however, the story of Fortune Lover—the game she used to play—has yet to end. Even more characters make an appearance, each with their own agenda to fulfill, and new mysteries await Katarina and those she loves. Will there be any way to avoid a bad ending when Catarina cannot remember what happens next?

Wealthy heiress Catarina Claes is hit in the head with a rock and recovers the memories of her past life. It turns out the world she lives in is the world of the game Fortune Lover, an otome game she was obsessed with in her past life... but she's been cast as the villain character who tries to foil the protagonist's romances!

Catarina comes across a traveling circus and meets Aaqil. She must uncover the truth and avoid doom flags!