Oh yeah, definitely!

Kazuma was about to head to bed, before he had a strange compulsion to go see Darkness. He momentarily tried to ignore it, but it nagged at him, so he just shrugged, and turned to head to her room. He knocked a few times, and heard her shout, "Come in!"

He entered the room, and was taken aback to see her in only her bra and panties. "Darkness, what are you only in your underwear for!" he asked, covering his eyes, but visibly peeking through his fingers.

"Well, I just wanted to greet my new Master properly!" she giggled.

"Your new... Master?" he asked, finding himself turned on by that, and then his attention was caught by her holding up a notebook of some kind. "What's that?" he asked her.

"A magic notebook!" she grinned, tossing it to him, and he reached for it quickly, fumbling with it before managing to catch it.

"A magic notebook?" he queried as he looked it over, raising an eyebrow, and opening it to the inside cover, where the rules were, and of course, her first entry. "... who's Lalatina?" he asked her, even as he read through the entry, realizing she had changed him a little. He was always a little perverted, but now he felt more unrestrained, willing to do the things he wanted to.

"That's my actual name," Darkness blushed. "...please don't make fun of it," she begged.

"Huh, thought you would have enjoyed that," he remarked, even as he grabbed the quill to write in the Note, "Lalatina will become Kazuma Sato's sex ****. Any command he gives her, she will be irresistibly compelled to obey. Even the most degrading of tasks he gives her, she will happily and eagerly do." That last sentence seemed a bit redundant, but hey, he figured it wasn't any skin off his ass to add that, and even though he had been changed a bit by the Note, he still wanted to ensure she enjoyed every moment of this. He accepted the changes, but she at least didn't write that he'd be a dick about it, which was a relief to him. She could easily have made him into an abusive asshole. And while she clearly wanted some degree of ****, he had a line, plus, there were some things he just didn't enjoy, unrestrained sexual desire or no.

Though he'd definitely still make her do plenty of submissive and humiliating things... Partly for fun, partly to "punish" her for using the Note on him. He turned to her, and she was vibrating in eagerness.