"Miss Monochrome" is an original character design from seiyuu Horie Yui. In March 2012, she first used the "Miss Monochrome" character as a 3D virtual singer to sing her songs at her concert "Horie Yui wo Meguru Bouken III ~Secret Mission Tour~". Later, the character appeared in a range of merchandise as well as in the social network game "Girlfriend (Beta)".<br><br> According to the setting, Miss Monochrome loves only the monochrome style, dislikes all kinds of color, and always dreams about changing the world into her favorite monochrome color.