The famous tactician Zhuge Kongming (Koumei, Japanese transliteration) dies on the battlefield but finds himself transported 1800 years to modern day Japan, Shibuya. Seeing everyone dressed up for Halloween, he thinks he's been sent to Hell and decides to let the servants drag him around. When he arrives at a club, he meets Eiko...

It is 2021 and the Tokyo 24th Ward, an artificial island where a crime predicting system "Hazard Cast" runs, is preparing to be re-integrated with the main land. The three friends Shuta, Ran and Kouki had always been encouraged to play as the "RGB heroes" by Kouki's sister, Asumi. However, after failing to save her during a fire at...