You were visiting Inazuma, and ran into some trouble. By trouble I mean Hilichurls. That's when you met your friendly neighborhood Oni, Arataki Itto! He rescued you from being ambushed by the Hilichurls, and now he's been following you ever since.

Now you were walking around as the Oni kept asking you question after question.

"Do you have a Vision? Where are you from? How well can you fight?"