Hey, wasn't Rias supposed to be back by now?

After giving Murayama and Katase the cum they wanted, Issei promised them he’d find someone else to keep his friends satisfied as soon as he could. But right now, he had a mission. He had done his waiting! He was going to fuck Rias Gremory today, or die trying!

...Well, maybe not that far. If things got delayed any more he'd probably just say screw it and screw Akeno. Or the Student Council. Or his two loyal harem girls that had just finished blowing him. Regardless! Come hell or high water, today was going to be the last day he spent as a virgin!

Issei marched to the Occult Research Club building, took a deep breath, and opened the door. And promptly had his breath stolen.

There she was. Long crimson hair. Bright blue-green eyes set in a beautiful face. And a body nearly every other girl in school would kill for. The most popular and desired girl in school, Rias Gremory.

Issei was snapped out of his reverence as Rias looked up from where she was sitting and saw him, "Issei? Ah, that's right. Akeno told me you wanted to see me, though she insisted on leaving the why as a surprise. Though I suppose this saves me the trouble of having Kiba look for you later."

Issei opened his mouth to tell exactly Rias what he was going to do to her, only to close it as he noticed something odd about what she said, "Wait, if you forgot that I was planning to meet you, why would you send for me?"

"Because of the events of last night, when that Fallen Angel almost killed you." Rias said.

Issei froze, surely she didn't mean Yuuma? Wasn't that a dream?

"It's fairly straightforward." Rias smiled at him, as a pair of pitch black wing sprouted from her back, "I am a devil."

"...and as of last night, Issei, you are my newest servent."

Issei's jaw dropped at Rias's confession, but before he could respond, he felt a strange sensation on his back. Turning his head, he witnessed a matching pair of wings sprout from his own back.

Issei had just one reaction to what just happened:
"EEEEEEEHHHHHHH!!!!!!?????"