In the darkest pits of hell there is a cage. It is sealed using the powers that were given to the Lord of Hell by the Great One. Inside that cage lay seven of the most deadly souls. If they were ever to escape it would cause the world to become so unbalanced that it would undoubtedly end. For hundreds of thousands of years the cage has remained sealed. However, tiny cracks have started to appear and it won't be long until they escape and wreak havoc across the worlds of both living and dead.

It's probably unheard of - two people who technically shouldn't be alive falling in love, but it's true. I don't know what, but there's something about her that draws me in. On the day Ojou found her, I knew she was the one for me, even though at the time I didn't really understand the human feeling 'love'.

Hundreds of years ago, there was a woman. She was beautiful but had been sold into prostitution. She had fallen in love and then been betrayed by her closest friend, resulting in the death of her lover and her own. The feelings of hatred and regret that so many of the female souls around her felt flooded into her body, causing her to lose her beauty and become Honne - Onna - Bone woman. She was damned to spend an eternity being alone, as men ran away at the sight of her face. She was alone in the world and had no one, until the day she came. The young girl with red eyes and her two male companions. The girl, who introduced herself as Ai, said that she would rescue her from this empty existence. Honne - Onna gladly accepted. She was now a part of the crew, sending souls to hell would be no easy job but it was better than spending an eternity alone. That's when it started, that's when she met him, the man who was once a sword and had also lead a lonely life before Ai found him. That's when Honne - Onna fell in love….again.