Make her a Neko for real. With two tails.

Naruto looked over Yugito, wondering how he hadn't gotten around to making the cat jinchuriki into a Neko yet, her whole theme was cats. So first ordered her, "Get naked, then get back on your knees.

She nodded, rising, quickly stripping off the casual shirt she was wearing. There was no bra under it, so her boobs bounced free. She then slipped off the shorts she wore with her panties, before kneeling again.

With a grin, he began to write, "Yugito will become a Cat Girl that has two tails, with only fur on her ears and tails, the ears transforming from her normal ones into cat ears and migrating up her head. Said ears and tail will be erogenously sensitive to the touch, and having her tails grabbed will cause pleasure rather than pain. Furthermore, her ears and tails will match those of her tenant's in appearance, though not made of fire. Her tongue will become rougher like a cat's, but not enough to irritate a cock, simply adding additional stimulation. Her voice box will also alter to allow her to purr and meow, while still retaining human speech. Her spine will also become mildly erogenously sensitive, stimulated easily from being stroked. She will instinctively purr when happy, as well as being sexually stimulated. She will gain more catlike mannerisms in this form. She will be able to change back and forth from human and cat girl at will, but find her new form more natural and prefer it, and also feel more comfortable on her hands and knees in said form than standing."

Once he closed the book, Yugito felt strange, but pleasurable tingles along her spine, strongest at her tailbone, as well as her tongue, ears and throat. She moaned as she felt her tailbone start to expand, and split in two, and fell to her hands, already on her knees from his order. Her ears grew more pointed and started to move to the top of her head, growing blue and black fur.

The tingling in her back stopped first, followed by her tongue, and and then her throat. "Nyah!" she mewled on instinct, before blinking in surprise at the sound she let out, before she started purring as her tails grew out, the fur matching her ears.

The transformation soon finished, and she quickly crawled to a mirror. She looked into it, her new tails swaying in synchronicity with each other, and her ears twitching. She meowed again, before looking at Naruto, and getting back up to her knees.

"Nyah... Not that I hate looking like this... But what did you do to me?" she purred inquisitively.

Naruto chuckled and said, "Don't worry about it for now, just enjoy what's going to come next." She nodded, putting some more at his words.