Just a casual introduction!

"That's right, we are also Devils," Souna replied to Issei.

"Her real name is Sona Sitri," Akeno explained. "She's the next heir to the Sitri family."

"Wait, another High Class Devil family? Like Riser's and Rias's?" Issei inquired. He then paused. "...I'm not going to have to save Kiba from a political marriage next, am I?" he then joked.

Rias actually giggled at that. "He IS quite popular with the girls here, but no," she replied.

"If anything, you're the one who would most have to worry about getting hitched politically in the future when you're of a higher rank," Sona remarked, and Issei blinked.

"Erm, what? Why would that be the case?" Issei questioned, wondering what was so special about him.

"Is it not obvious? You now have the legal protection of Sirzechs-sama when it comes to ownership of the Lamp. Any Noble who wants it would have to do something cutthroat and risk his wrath, or jump through a bunch of hoops and red tape to try to get it legitimately. You think human bureaucracy is bad? You should see the paperwork obstacles we Devils can invent when it comes to getting our way," Sona explained dryly. "Also, multiple wives is allowed in Devil society, though fewer exercise that than you might think. They usually just have one wife and several concubines."

"...so... A lot of these Noble families are going to try and rope me into marrying their heiresses or something, to try and get access and a say in the Lamp's use?" Issei realized.

"What do you know, the pervert does use his primary head for something," Saji remarked.

"Well, I wouldn't say the heiresses specifically," Rias giggled. "More like siblings of said heir. Or cousins. You're still a Reincarnated Devil, not a Pure Blood after all, and a lot of the higher ups in our culture are... Old fashioned," she added the last part as diplomatically as she could.

"...is "old fashioned" a polite way of saying "racist as sin?"" Issei asked flatly. Rias's silence was answer enough. "And I'm guessing the reason they have yet to start trying it is because I'm still at the bottom rung, and they want to wait until I've made more of a name for myself?"

"That, and they're also trying to gauge your interests, so they know which blood relative is the best bet," Sona remarked with a perfectly straight face.

"...if any of them hear the rumors my dumbass friends have been spreading, and as a result, send a son or nephew, I'm going to kill myself," Issei said flatly. Rias burst out laughing as Asia looked confused. Rias had in fact heard about the Issei and Kiba one, and personally found it hilarious.

Even Sona let out a grin at that one. "At any rate, I simply thought it was time we got acquainted," she stated, before schooling her features back into the straight face. "And to let you know about the power structure here. Technically, the Gremory family has the most influence here, but we run things for the most part. And the Student Council is all my Peerage," she added. "I am aware of the level of power you currently have, and that, against all expectations, you have been surprisingly responsible with it. Self indulgent from what Rias told me, but at least you haven't been going around making the girls all members of your harem. I trust you'll keep it that way?" she asked him sternly.

"That was the plan," Issei chuckled sheepishly.