Hell of a lot! Though he has some advice for Kiba!

"Ow... Ow..." Issei wept as he laid on the ground. He had spent the past hour sparring endlessly with these three, who he was strongly suspecting were all sadists, not just Akeno, one closeted, one also closeted but with a glass door, and finally, Akeno herself. He was covered in welts, cuts, and burns... Side note, he was concerned with how delicious cooked him smelled.

"Right, time to heal you up," Rias smirked, walking up from where she had been sparring with Raynare in the meanwhile, Raynare of course ****. She knelt down, and reached into Issei's pants, pulling out his cock, and stroking it to hardness.

"Right, better make ourselves scarce for the moment," Koneko grumbled, rubbing her eye, which had started to swell. Issei had managed to land that particular hit during the last spar. It was far more gratifying than he would say aloud. "And have Asia patch up the few hits he had managed to land on us..."

"I'm good with watching," Akeno grinned as Kiba and Koneko started to walk away.

"Actually, Kiba, if you have a moment," Issei stated, even as Rias stroked his cock, which had hardened. "I had some of that advice for you..."

"...while you're getting a handjob?" Kiba asked Issei, stopping. "Sure you're comfortable with that?"

"You can always turn away, if it embarrasses you," Rias chirped at him, gently moving her hand up and down Issei's member, ensuring her grip was tight enough to stimulate, but loose enough to not be uncomfortable. "Besides, you've seen us both naked and been nearby when we had sex before..."

"Yeah, I'm pretty much numb to having an audience right now," Issei admitted dryly.

"Fair enough," Kiba replied. "So, you had some ideas on how to exploit my Sacred Gear some more?"

"Yeah. You can create any kind of enchanted blade, right?" Issei moaned as Rias leaned down to give the head of his shaft a lick.

"Pretty much, so long as I have a basic understanding of how the enchantment works, and I'm actually physically capable of handling said enchanted weapon," Kiba nodded.

"Then, I think you're kind of limiting yourself by thus far only making blades that have elemental advantages over particular enemies. It's a good trick, yes, but it's only scratching the surface of what you could do," Issei panted, bucking his hips slightly as Rias leaned down further to start suckling his cock. "I mean, are there enchantments that boost physical stats? Magical abilities? Training rates? Blades with special abilities most people wouldn't even think of?"

Kiba blinked, and began to ponder what Issei said. "...you know... I actually hadn't considered that... I might have to experiment a little... Elemental enchantments usually got the job done, but I guess I can't rely solely on that, especially given the fight ahead. Especially when up against enemies when I won't know what element they specialize in until after they start using it on me..."

"Exactly," Issei told him while Rias bobbed her head, sucking harder. "I can think of a few cheap tricks you can use just off the top of my head," he chuckled. "Like... How about a blade enchanted to flash light at an enemy to momentarily blind them? Or one that makes the arm holding it invisible, while also casting an illusion of the same arm in a different stance and position so they don't know where you're actually swinging from? Could you make a blade with multiple enchantments on it for adaptability, even if it dilutes the enchantments a bit?"

Kiba was deep in thought. He was usually against fighting dirty, but the fight ahead was hardly a fair one from the start. Why shouldn't he do his part to even the odds? Even if it meant swallowing his pride a little. "...I'll think about it," he finally decided as Issei grunted, and came in Rias's mouth.

As Rias pulled off, swallowing Issei's cum, he got up, healed and rejuvenated. "Good. Just try some of those ideas out, alright?" he asked.

"Funny you should mention that," Kiba smirked, looking so see Koneko coming back, and Akeno, who was already getting back into position. "Back to sparring."

"... you're going to use ME as the test dummy for these ideas, aren't you?" Issei groaned, fixing his pants. "... that's a fine way to thank me for the ideas..."

"Well, if you're serious about helping me learn to **** the shit out of my Sacred Gear's potential, you shouldn't have a problem with not doing so halfway, right?" Kiba smirked, and Issei shivered. Yep, definitely a closet sadist here.