He makes some headway, and strength training with Koneko after a recharge!

Issei spent the next hour practicing, and to his surprise, he was actually doing a fairly decent job at it. "That's all of them," he told Akeno, handing the crate back to her.

"Not bad, you didn't even ruin more than a few!" she smiled, inspecting his work. "Might need a little more peeling in a few spots, but this does still save me a good amount of effort!"

"What's next?" he asked, taking a seat on a rock. Rias approached him and immediately knelt between his legs while unzipping her exercise jacket to show she was wearing nothing under it. Raynare was currently **** and smoking nearby, so there wasn't a concern about her overhearing anything.

"Well, Master, I'm going to prep you for some strength training. Given who it's with, you're going to want all of your stamina for it," she told him, wrapping her generous boobs over his erection once she had pulled it out.

"It's Koneko, isn't it?" Issei whimpered, both in fear and arousal, and Rias nodded as she began working her breasts on his shaft.

"Yeah. I would have given you a few hours to rest, but time is still short, despite your efforts, and we have an exploit..." she grinned, leaning down and licking his tip as it poked out of her cleavage.

He panted, clutching at the rock he sat on. "...almost regret not having that reprieve..." he admitted, bucking his hips a bit.

"Really?" Akeno teased, leaning in to watch, her hands down her sweat pants as she masturbated without giving a damn that others could see. "Even if it would risk not being strong enough for the challenge ahead, and losing the lamp? Even though the shorter reprieve also means you get a good excuse to receive a boob job?" she moaned out as she stimulated her g-spot.

"I did say almost," Issei reminded Akeno as Rias picked up the pace, squeezing her breasts together as she suckled his tip.

"...fair enough," Akeno crooned, before glancing at Asia. "Maybe go heal Raynare after we're done? I think Rias may have gone overboard..."

"I told you guys to not be too harsh with her," Asia huffed.

"No, I did it on purpose so she wouldn't overhear or see anything to bring back to Azazel," Rias admitted without any shame, pulling her face from Issei's tip to speak. "We can only simply send her off so many times before she grows a brain and instead hides nearby or something."

Asia sighed, but conceded the point. Issei moaned as his cock twitched, and he told Rias, "I'm about to cum..." She nodded and picked up the pace, returning her mouth to his shaft. He soon grunted, and released his seed into her mouth. She gulped it all down greedily as he felt his aches and fatigue fade.

"Unh~!" Akeno crooned as she herself reached her peak, shuddering. She hadn't been that tired yet, but it never hurt to top off the stamina.