[Jujutsu Kaisen] I Am One of Sukuna's Fingers

My name is Aoki Gen. But ever since the day I woke up in this world, people always seem to prefer calling me by another name.

"Ryomen Sukuna," or, more precisely, "a part of Ryomen Sukuna."

That's right. I'm Aoki Gen, a Special Grade Cursed Object, one of Ryomen Sukuna's twenty fingers. And today, for some unknown reason, I became "human."

--Aoki Gen's Diary

My name is Aoki Gen. I'm an ordinary, unremarkable male high school student. On my seventeenth birthday, for some unknown reason, I transmigrated (eyes shaking in shock). But it gets worse: after transmigrating, I was no longer considered human. Honestly, being transmigrated into a part of the big bad from an anime I've watched is a real headache (laughs).

P.S.

The protagonist's identity has a hidden thread, but it should be very easy to guess.

The protagonist is actually a character I created for my Jujutsu Kaisen roleplay, but I like his personality so much that I decided to write a story about him.

The main story is told in third person.

The protagonist isn't normal, and he isn't a good person either. He's essentially a hedonistic troublemaker.

The pairing is confirmed. His name is Qiang Fu Jiang Ling (yes, he's the counterpart to Aoki Gen in my roleplay group, and I've already gotten the character creator's permission). His identity is quite interesting, so you can try guessing.

Theme: I'll fill this in when I think of something.