The Twelve City, a land governed by the leaders of the families who bear in their names the Chinese zodiac. In a city where youkai and humans coexist, the cat youkai who holds a grudge against the Rat Family...

At that place. The dead yearn for the life of light. The ones alive yearn for the solace of death. That place is Hell! Suderu Koiwa was a normal high school student dealing with routine day-to-day life. Unti...