Zero Senki - Unknown Being

Checking DMI pool data Boot from CDROM: "Huh, where am I? Huh, it looks like a forest of some sort."

Zero Senki jolted awake from his sleep after a strange dream that he had. That dream has prevaded his sleep since he arrived on Earth for the first time. Two days ago he was dared to enter an abandoned mansion. He was convinced the the mansion had nothing special in it, other than a few intresting books. Then again, not all mansion owners were bookworms. He's even heard stories about haunted ones from a dare gone wrong.

The dream entailed, what Zero discovered, an Ao Oni, or blue demon. He learned that blue demons test your skill and wit in various ways. This particular Oni stared him down in his dreams to discover how fearless I am.

"Come to think of it, I encountered an Ao Oni in that mansion." He figured that because of the encounter made these dreams occur.