First, they go out to eat!

Issei proceeded to show Asia around, and soon took her to a burger joint. Once they made their orders, and had the food in front of them, Asia looked at the meal in clear confusion. "There a problem?" Issei asked Asia, who looked back up at him.

"...there's no knife or fork to eat with," she replied, looking a bit embarassed that she had forgotten to ask for such utensils.

"Oh, is that it?" he asked her, blinking. She really was sheltered. He proceeded to demonstrate the correct way to eat a burger and fries.

"Oh, that's how!" she realized. "In that case, I should clean my hands first!" She then proceeded to dig something from her pockets... a vial of holy water.

"Ack!" Issei yelped, already feeling uncomfortable just being near that. "Just... use a wet nap, I got one, don't use something that dangerous to me!" he pleaded, handing over the wet nap. To her credit, she realized her mistake and immediately put the holy water away, much to his relief.

Unfortunately, she promptly forgot the lesson when, upon cleaning her hands, she started to say grace... and caused Issei to collapse to the table. As Asia panicked a bit, Issei reflected a bit. He still didn't agree with Koneko, but he was really starting to see where she was coming from. Asia was a threat to their health by sheer accident!

Still, he recovered, and they started eating. Asia immediately found the taste of the burger delightful. "Sadly, we can't eat that too often," Issei remarked. "It will go straight to the hips and the gut if we do."

"Makes sense," Asia chirped, eating another bite.

"...so... have you given much thought to Rias's offer?" Issei asked as he considered his approach to this whole thing. Asia paused and seemed to consider the question.