Monochrome Factor

The story revolves around the high school student Akira Nikaido, a typical slacker living a normal life. That is, until he meets the mysterious Shirogane, a man who suddenly appears and tells him that they have a destiny together. When Akira hears this, he is shocked and doesn't believe a word of it. Suzuno Aya, a friend of Akira, forgets something in the school one night, and asks Akira and Kengo to help her and go find it.

He agrees, and while there, he gets attacked by a shadow monster. Shirogane convinces him that the balance between the human world and the shadow world has been distorted and that Akira must become a "shin"- a creature of the shadow world- in order to help restore the balance. But if Akira stays as a "shin" he will become a shadow himself, and normal people will not see him any more. Shirogane wanted to be with him and lied that if he became his shadow he will be seen by other people again.

Carlo Santos of Anime News Network said that the manga is a "ripoff of a ripoff" which has a "complete lack of creativity" even though it has neat visual effects, effective action scenes, and some characters which "characters." He also criticized the series for having "really dumb plot holes" and said that apart from the humor, entertainment value in the series can be found in action scenes and "Akira's visions of the shadow world." He concludes that the series "does very little to make the reader want to keep going."

Angel Wilson of The Geekiary called the series humorous and "visually beautiful," while praising the "wonderful cast of side characters." Wilson called the relationship between Akira and Shirogane as massively tear inducing and praised it as a yaoi anime.