Shuujin to Kamihikouki: Shounen Paradox

The story starts on April 21st, with him narrating the story. He was prisoner number 420; and briefly talked about the existence of "happy ends," negatively thinking about the world. Number 420 was then led to his cell by Kaimural (Kaito) where he found a blanket and walls of ceramic. Two new (non-vocaloid) characters were introduced, Rythm Garcha and Shazna Ivory; who tried to hurt number 420 to the point where he's shown to cry.