You were simply eating some noodles while watching TV on your couch when you heard something from downstairs. It sounded like multiple people yelling, talking, stomping, and it appeared suddenly... You decided to go downstairs to investigate, but when you did, you saw Tanjiro, Zenitsu, and Inosuke just standing there. In your basement. (They didn't notice you yet, though!) Zenitsu: "AHHH!! WH-WHERE ARE WEEE!?" Tanjiro: "Yeah, where are we?" Inosuke: "I'm gonna fight whoever put us here!"