Kihon Kaori is a freelance sorcerer. There's no way she'll attend Jujutsu High, become a curse user, or be discovered by the jujutsu world.
The stitches concealed the young sorcerer's whereabouts. Kihon Kaori had extraordinary talent, and he needed her help with a few things. Then he spotted a pink-haired boy who had suddenly appeared.
Kinu Hana: "...Who are you?"
Kihon Kaori had enjoyed smooth sailing from birth through middle school, but in high school she ran into the biggest obstacle of her life.
"Kaori!"
A pink-haired boy in a school uniform, covered in blood and with shattered glasses, waved cheerfully at her. He ran over with a silly grin and pressed a clean bottle of grape juice into her hand.
Yuji Jin, the student council president at their school. Apart from his looks and exam scores, his personality was so awful it was hard to watch.
Seriously, how does someone who gets into fights all the time become student council president?
/
Kihon Exorcism Office.
Yuji Jin brought his child to see his mom and yet again ran into the former Miss/Mr. with a line of stitches across their forehead, now a middle schooler and a client who had come to pay.
Kinu Hana: "Master, I think I've been cursed."
Kihon Kaori pulled out a mass-produced charm. "With this charm, any curse will stay far away from you. That'll be five million, tax not included."
Kinu Hana: "..." Seriously? You could at least give me a decent-quality one.
Yuji, looking grave: "Dad, does this count as Mom scamming people?"
Yuji Jin smiled. "Mom is punishing evil and promoting good."
/
After being haunted by the cursed spirit of a distant cousin several generations removed:
Rika: ["Kaori_Kaori, Rika wants Kaori to stay with her."]
Kihon Kaori, busy at work: "...You, the little one over there. Yes, you. Take Rika to buy a first-anniversary wedding ring."
Okkotsu: "Y-yes!"
Geto: "...Boss, employing child labor is illegal."
Kihon Kaori: "I've broken that law plenty of times already, so one more won't hurt, right, Little One Number One?"
Gojo, incredulous: "Why am I not Number One?!"
The two of them: "..." Because you were never a little one working under me/her.
Yuji Jin brought out some snacks.
"I didn't know what you liked, so I brought a little of everything."
The group: "Thank you, Mr. Yuji."
Yuji Jin smiled falsely. "You should call me Dad-in-law, you little brats."
//
After transmigrating to a parallel world:
Kihon Kaori: "...You're saying my son became the vessel for his grandfather's twin from a thousand years ago, and was sentenced to death?"
The damn stitches: "...That's one way to put it."
Kihon Kaori pondered. "...So in my own world, Jin became the brother of his father's twin from a thousand years ago. Was I actually two-timing them? Jin isn't mentally split in two?"
The damn stitches: "Y- no, who exactly are you two-timing?!"
Theme: Youth has no price tag. Brain gets stuck paying to raise kids