Originally debuting as a single exclusive, the series eventually were released in W☆O's Niconico and Youtube channels, actually with two songs that composes it. The series shows the strange and twisted relationship between a teacher (Len) and his student (Tojo). Although it appears that the teacher is taking advantage of an emotionally vulnerable girl, the reality may not be as it seems. Later it was revealed that a novel would be released on December 28, 2013; written by Miyuki with illustrations by domco., published by Kadokawa Shoten, under the Kadokawa Beans Bunko label.