Remilia Scarlet is a vampire known as the Scarlet Devil and is feared by many. She's the mistress of the Scarlet Devil Mansion, which stands on the shores of the Misty Lake. She tends to do whatever she pleases, and dishes out impossible requests to her servants. However, with her being the mansion's mistress, none dare express their discontent with her management style.

Flandre Scarlet is the younger sister of Remilia Scarlet, the mistress of the Scarlet Devil Mansion. Some say she's hiding away in her underground room, others say she's forced to remain there. She's been venturing out more recently, but thanks to her powerful ability, she's been breaking all kinds of things. However, there's no one around capable of scolding her―not even Remilia is up to the task.

The Japanese word for graffiti, "raku-gaki," originates from the word "raku-sho," referring to societal criticism or satire written in a public place. Today, raku-gaki is used to describe words and images drawn in inappropriate places as a form of misbehavior. While raku-gaki does sometimes utilize paint, hurling paint bombs at people indiscriminately and splashing paint on the walls inside someone's house is nothing more than a prank. In the end, everything comes down to restraint and knowing when to stop, but good luck convincing these sisters of that...

Dark Nurse of News There are many types of fear and despair. A perpetually-empty Offering Box, struggling to keep your eyes open while on duty, an event that threatens to overturn the peace of daily life... Whatever it is, there's a chance it embodies fear and despair for someone. It follows, then, that even a mild prank may bring about fear and despair.

On that day, a maid of the Scarlet Devil Mansion let out a sigh. The mistress and her younger sister were having fun covering the walls in paint. However, this maid was a perfect and elegant servant. She worked in silence, hoping to remove every splash of paint from the mansion's walls. But in the depths of night, tragedy struck once more. Remilia and Flandre were once again in the mood for fun and had their paints at the ready. Little did they know, that fear and despair awaited them, in the form of their servant's fury...