The protagonist Mikage is working at a "super" black company. His desk is full of items to keep him awake, his face is filled with dark circles, and mountains of documents doesn't seem to be decreasing at all. In the midst of nothing but despair, a chuckling sound echoed from the "positive psychopath", Kohinata Haru. "Working overtime is fun, isn’t it!!! Hang in there, Mikage! Don't give up! The last train hasn't left yet!"