Oh yeah, when Rias is not lecturing Issei!

"It was quite risky, bringing her here," Rias sighed as they stripped naked on the other side of the shower curtain. "But I'll give helping her a chance."

"...so why didn't you try to stop me when I made the wish to be able to bring her through too?" Issei asked Rias as he tossed his own clothes over the divider.

"Heat of the moment, plus you making a wish telling me you would assert your authority as my Master in the moment to help her if you had to," Rias shrugged, leaning against Issei, and making him blush at the feel of her soft flesh. "Do you just find her hot, or do you feel that strongly about helping others?"

"...I do find her hot, yes, but even if she wasn't, I wouldn't just ditch someone who is that nice to who even knows what," Issei asserted, feeling his injuries healing up from Rias's power.

Rias sighed, before cupping his face. She then smiled as she used her other hand to grasp his cock, making him jolt and moan in pleasure. "...fair enough, Master," she purred. "We'll offer her our protection, and hope she joins the Peerage, but that's not all I want her to join..."

Issei blinked, before it clicked what Rias was getting at as she began to stroke his slick cock. "Wait, you mean..."

"Yep! She can be the first person you get into the harem!" Rias giggled. She then gave Issei a sultry smirk as she gently squeezed his cock to further stimulate it. "Think about it... Think about how hot it would be to... "corrupt" a sheltered nun, and let her experience all her lifestyle had her missing out on..."

Issei couldn't help but moan, not only at Rias's actions, but her words as well. Damn it, that really was hot to think about...