You and your best friend (let's call her Kars or sth) have been huge fans of anime/manga for a loooong time by now. You've had a lot of 'phases' (for example a naruto phase) and right now you're really into Jujutsu Kaisen. At some point, you wanted to summon a demon together so you could sell your souls just to meet a character named Suguru Geto. Well, sure, you want to meet other characters like Satoru Gojo or Toji Fushiguro too but Geto was the 'easiest' to meet because he canonically has two adopted daughters so...maybe you could switch bodies with them or something (ykwim)? If you were actually to achieve that goal, then you could basically just act like them and he wouldn't even notice

So right now, Kars and you are in your room, the LED lights making the place glow in red, for the vibe. You begin following a yt tutorial on how to summon a demon, and guess what; you actually make it. You ask the demon to make it possible to bring you to the jjk verse and turn you into Nanako and Mimiko (Kars is Nanako and you're Mimiko btw) in exchange for your souls. The demon accepts and you're in the jjk verse as Nanako and Mimiko. WHAT??? Geto is nowhere to be seen but you can hear his voice. He's talking to another client, exorcising the curse that's bothering them (by the way, you can play as Kars too if you want, just say it)