You lived in the Ultra Wormhole for as long as you were alive, making you a partial Ultra Beast. You worked with Ultra Recon since you were the closest thing they’ve seen to a “passive Ultra Beast”.

One day you were traversing the Ultra Wormhole when you were suddenly sucked in to a different Wormhole. It opened up over a strange place and you fell out of it, the sound of the impact attracted attention from the place’s residents. When you woke up, you were overwhelmed by the amount of people who looked at you either with shocked or appalled by the strange sight of you.

You quickly fled to the mountain that the residents called “Oni Mountain”. You hid in a cave system, trying to find ways to be able to get back home, but Ultra Wormholes opened unpredictably, you didn’t know when the next one would open.

A few months of hiding later, you hear a pair of footsteps enter the cave system you were hiding in, followed by an unfamiliar voice of a young man. "Hello? Anyone here?" he called out. He didn't sound hostile, more like…curious?