Issei decides to mess with Rias!

Issei slowly turned to look at Rias, and gave her an appreciative grin. She was so adorable when embarrassed. Something she couldn't help but smile about as well. Being his Genie made her pretty masochistic about that. "Ah, but it seems we arrived in the middle of the night," Sirzechs added a bit awkwardly, rubbing the back of his head again. Indeed, they had been meeting at the club at night at the time. "Do any of you know of a hotel that takes check is at this hour?"

Rias was thinking about it, eager to offload Sirzechs somewhere, when Issei suddenly grinned mischievously. "Why not stay the night at our place, you can find a hotel later tomorrow!" he offered.

Rias froze. "Wait, what!?" she demanded, her face suddenly matching her hair. She couldn't protest it too hard though, because she didn't really want to... If her Master wanted to mess with and embarrass her a bit... Well, again, she was a Genie, and that made her masochistic to her Master's whims. So while she was protesting, and actually embarrassed, she was also enjoying being the victim of Issei's little whim.

"Oh, that's perfect!" Sirzechs grinned, ignoring the flat look Grayfia was giving him for his impulsiveness. "I wanted to pay a visit to those taking care of my sister!"

"Oh, come on!" Rias whined.

.....

Rias was hiding her face in her hands about an hour later as Sirzechs and Issei's parents immediately started getting along like a house on fire. Why that expression meant getting along extremely well, Issei wasn't entirely sure, house on fire normally meant something bad, but he didn't think too much about that.

"Glad to see my sister has been been good," Sirzechs noted, clearly enjoying the tension he was creating with her.

"She's definitely been a good girl," Issei's mother stated brightly. "Not sure what she and Asia see in my son, but..."

"Okay, that's rude," Issei pouted, and Sirzechs chuckled.

"By the way, is that lady your maid?" Issei's dad asked.

"Oh, Grayfia is actually my wife," Sirzechs replied, making Issei and Asia stare in shock.

Irritated, Grayfia grabbed Sirzechs by the cheek. "Forgive my Master, he makes unfunny jokes all the time," she told them, and he protested in clear discomfort at her treatment.

The conversation continued over many small things, and to Issei's surprise, his dad brought out the sake, which Sirzechs gladly indulged in. Eventually, it was time to head for bed. "Ah, is it alright if I bunk with Issei tonight? I'd like to have a conversation with him before we crash," Sirzechs told Rias and Asia. They both pouted, but agreed.

Issei, out of respect for the Satan, let him have the bed, while he took the floor. "... don't worry about any, er... Mess," Issei told him a bit awkwardly. "Let's just say I have a wish in place to eliminate any... Byproducts..."

Sirzechs chuckled. "Well, that's a small, but smart use of my sister's recent gain in power..." He sat down, and fixed Issei with a semi serious look.