I'm Gojo Satoru's Wonderful Niece

Revised! My name is Gojo Anzu, and I'm a genius and a beautiful young sorcerer. But my uncle, who's somehow becoming more and more like a high school girl as he gets older, stole my title of genius when I was little. Damn it, he's even prettier than me! And how come the kids he adopted are all beautiful too? That's not fair!

I haven't decided on the pairing yet. Maybe I'll let readers vote. The heroine transmigrates as Satoru Gojo's niece, and she hit her head when she transmigrated. She's extremely powerful and overpowered. There'll be a childhood scene where she gets press-ganged into service. Not everyone is guaranteed to survive.

Premise: Family stays by your side forever.