With a Sex Genie on the line? Of course he does!

"Lord Sirzechs, with all due respect, it's still very... Unconventional for a Pawn to have any position of authority over his King," Riser tried to argue tradition.

"Unconventional, but we make it work," Rias shrugged. "He defers to me when it comes to matters of the Peerage. He only claims authority over me in private, otherwise, I'm in charge. He hasn't abused his power over me in the slightest," she finished, shooting Riser down without hesitation.

"...he still lacks knowledge about the needs of the Devil Populace!" Riser tried again.

"...did we not cover this?" Sirzechs snorted. "Last I checked, I agreed with that point, with the caveat of "yet." Knowledge can be gained. Experience earned. The qualities Issei has, that you lack? Not as easy to gain."

Riser thought frantically for any remaining counterargument, before trying one last Hail Mary. "You said you arranged the Rating Game because of Rias's wishes, right? But how do we even know what her wishes really are?"

"...now you're just embarrassing yourself," Rias sighed. "I thought I made it clear what my wishes were."

"Yes, but how can we tell those wishes are genuine?" Riser countered. "You are bound to the will of your Master, no? How do we know he's not telling you to lie?"

"...that would be a better point, if even before I became a Genie, I didn't make it clear how little I wanted to do with you," Rias replied flatly.

"You might have just been being hard on me! A lot of people argue with ones they're in love with for the fun of it! Hell, there are literally jokes about how old married couples argue!"

"While I personally find that unlikely, he does make a point that we should confirm objectively what Rias wants," Sirzechs nodded, though it was clear he was just humoring Riser at this point. "Issei, would you happen to have any ideas on how to prove beyond any reasonable doubt that my sister would prefer you?" Sirzechs of course, already had an idea or two, but was giving Issei another small chance to prove his worth. He'd already passed Sirzech's tests, but he was now offering bonus points.

"Erm, well, I keep the Lamp back in a lockbox in the club room at Kuoh, which Akeno booby trapped the living daylights out of magically if anyone else besides me or another Peerage member with permission tries to get into it..." Issei explained. "I can go retrieve it, pass it to someone trustworthy, and then we can have them ask Rias."

Sirzechs grinned. "An excellent suggestion! Let's do it that way then!"

...

Ten minutes later, Issei was back with the Lamp, and handed it to Grayfia. "Just rub it, and ownership will transfer to you," he told her, and she nodded, doing so.

Rias jolted slightly, her legs dissolving back into the tail, and her clothes reverted back to the harem garb. "Hello, Mistress, how may I serve you?" she asked Grayfia as she floated before Sirzech's Queen.

"Oh? Why did your legs vanish?" Grayfia asked curiously.

"Well, Mistress, while Issei gave me blanket permission to have my legs while he was my Master, it expired when I changed ownership. Now, I believe you had a question for me?" Rias asked.

"Yes. Between Issei and Riser, who would you pref-" Grayfia started to ask, but Rias answered without hesitation.

"Issei."

Riser slumped. "...at least let her finish the question..." he wept comically as Rias stuck her tongue out at him from under the veil.

"Well, I for one would say that that is quite conclusive~!" Sirzechs clapped his hands, quite cheerful. "You can give the Lamp back now, Grayfia." Grayfia nodded, and passed back the Lamp to Issei, who took it, rubbed it, and soon had Rias with her legs back, and back in her standard attire.

With that, Sirzechs dismissed them, and Rias took Issei's hand, and started to walk back to get the Peerage. "I say we go home, and you pamper me, and maybe Asia too, first thing," she was saying to Issei, who flushed, and nodded, though wishing she hadn't said that in earshot of her brother.

"Oh, actually, Issei, if I may have a man to man talk with you?" Sirzechs asked Issei, who paused.