Kagami Sakamori was one of the top players in the VRMMO Ark Earth Online as Danblf, a veteran summoner with the gravitas to match his elite status. When he falls asleep playing one day, he's transported to a world where the game is reality—but instead of his all-powerful avatar, he's stuck in the body of a cute young girl! He can't let anyone know that this little cutie is really Danblf, so he takes the name “Mira” and claims to be Danblf's disciple. If this gets out, he'll never live it down!

Exorcist works in Hokkaido to exterminate all of the zombies that have been plaguing the land. However, although she can handle the perverted Takuboku Ishikawa, she finds herself at a loss when faced with the revived Shinsengumi. Within the chaos, she finds herself having to borrow the help of undead idol Francesca and her dog Franken.