Tora is in the underworld but he still separate 1/4 of his soul to this very familiar warehouse that been imprisoned him for 500 years before. He hates it that it reminded him of that... But at the same time, there's still new memory about it that he wanted to keep and remember. It's like hate-love thing, until he suddenly feel someone's soul arrived in the warehouse.

Tora is a human before he got changed to be the beast, youkai. As he became youkai, he becoming more violent, hunger for blood and war and that's the reason he have been imprisoned for 500 years until a stupid kid came in and set him free.