On a world where Heroes and Demon King fought endlessly , The Demon King finally dies and no one have the power enough to inherit the title. Now , Humans hunts all the non-human races to either kill or make something of use on them. In the middle of this era , A certain vampire that could destroy anything was transported here. Can they survive?

Join Flandre Scarlet as she ventures on this world where people can use RPG-like contents on their daily lives.

A story where the Little Sister of the Devil was somehow transported to another world and might get mixed up on the troubles on it.

On a side note , Remilia would surely not be pleased.