A kiss on the cheek... with a promise for future, escalating rewards!

"So... what's the reward?" Issei asked Akeno, who smiled as she approached him. He tensed slightly, hoping she wouldn't go sadist on him. However, she instead leaned in and gave his cheek a kiss. He paused, before smiling like a fool.

"I know that's not much, but..." Akeno started to say, before Issei cut her off.

"Oh, no, that was actually great! More than I've ever gotten from a girl before!" he told her, flushing a bit, but still grinning.

"Hey! I straight up fuck you, Master!" Rias pouted adorably.

"Yeah, but you're bound to me as a Sex Genie... you don't really count, do you?" Issei replied. "I can go all the way any time I want with you, you can't deny it's a little special when someone else does something like this, can you?" he asked. "Not that you aren't special in a different way, that's not meant as an insult, it's just... well, different, and still nice for Akeno to give me a kiss on the cheek like that..." he finished, rubbing the back of his head, slightly flustered.

"...fair enough," Rias giggled.

Akeno giggled as well, before she continued, "As I was saying... in the future, you might earn more rewards from me by doing things that either turn me on, or otherwise impress me. And each reward will be sexier than the last... Until you get to the grand prize," she told him with a slightly sultry smirk.

"...grand prize?" Issei asked. "What might that be?"

Akeno simply smiled at him, and stood to get her clothes. "You'll find out if and when you win it~!" she told him, before getting dressed. Rias and Issei joined her, Issei's mind racing with possibilities as to what said "grand prize" could be. They headed to the club to use the shower there, and go about school.