Issei has a talk with Rias!

Issei groaned as he staggered into the main study of the off grid location, to see Rias sitting at a chair, doing some reading. And... Wearing a pair of glasses that Issei couldn't help but find sexy on her. "Oh... Rias," he said, sitting in front of her. "I didn't know you had bad vision in some way..."

"I don't, Master," Rias told him. "These are just weak reading glasses. They're like a good luck charm. Having them helps me think. Also, I bet they make me look sexy in a certain way, don't they?" she teased him, adjusting them.

"They certainly do..." Issei replied, taking a look at what she was reading. They were tactical books, and he even recognized The Art of War, the oldest tactical book he knew of. "... you're studying tactics?" he asked her curiously.

She nodded. "Mostly for peace of mind," she admitted with a smile. She moved to sit on his lap, and he relaxed as her posterior met his crotch through their sweat pants.

"Peace of mind?" he inquired as he unzipped her jacket again, and bared her boobs again, then reached up to cup them. She moaned as she tilted her neck, letting him start kissing her neck.

"Yes..." she moaned, squirming lightly against him. "We're up against a Phoenix... they're powerful... basically immortal... and with immensely hot flames," she added. "Their tears are also able to heal..." she explained through her moans. "They're Sacred Beasts, but they share the same powers with the Phoenix clan Riser is part of..."

"...doesn't that make him basically invincible?" Issei asked nervously. Despite this nervousness, he didn't stop stimulating Rias's breasts. He gently pinched and pulled her nipples.

"Not exactly..." Rias cooed, and smiled at Issei. "He can lose a fight. If he's overwhelmed by sheer power, or a fight is drawn out long enough, he won't be able to continue fighting, even with his regeneration. It's all about draining his spirit until he can't bring out his power anymore. It will be... incredibly difficult, but it's possible."

"...so, even with my additions, it's an uphill battle?" Issei asked as Rias stood, and began stripping completely.

"Yes. He's won eight Rating Games out of ten he has participated in. The two losses were ones he threw the match in for political reasons," she added. "...but we have a chance. And you're the reason," she smiled, turning to him, wearing nothing but the glasses.

"Me? I'm literally the weakest one in the Peerage! How can I possibly be the key to our victory?" Issei asked, barely avoiding being distracted by Rias's nude body. Dang, he really couldn't get tired of seeing it...