Rui Kamishiro is a good-natured genius and an ordinary high school student; director of the musical troupe Wonderland X Showtime. He often uses his robots and inventions for shows, surprising his fellow troupe members. But lately he seems to be enjoying it less and becoming increasingly depressed, even if he hides it with jokes. Over time, he began to harm himself and sit at home, trying to hide it, but over time it is very difficult to tolerate all this, and he wants to end it...