A/N: summary of the chapter at the bottom.
Issei got dressed.
"You really don't want to come with me, Asia?" he asked.
"I don't think I'd be much help, Ise-san. And I promised I'd work on my chest, but you kept distracting me."
"Okay then," he zipped up his jacket. "I'll be back soon."
Issei leaned in and gave her a deep kiss.
"Good luck," she said.
Issei went outside. It was just getting dark outside. Perfect timing.
He got in the car and turned it on.
Where to?
[Which one do you want?]
Doesn't matter.
[Hm. I have an idea.]
Ddraig gave him directions.
After about half an hour, Issei reached his destination.
You sure about this?
[Do you have a better idea?]
Good point.
He got out and raised his hood.
There was no one on the street.
Slowly, he walked to the back of the house.
Let's go.
He spread his wings and flew upward. With a simple spell, he unlocked the window and went inside.
Issei looked around. The hallway wasn't lit, but the moon provided enough light for his devil eyes.
Which rooms is hers?
[I don't know. Why are you asking me?]
This was your idea.
[Just check all of them.]
Fine.
Issei folded his wings and silently walked to the nearest door. He peered through the keyhole.
Bathroom.
The next door was an empty bedroom, probably from her parents. On the third door he heard a sound before he could even peek through the keyhole.
"Ah, Ise-kun."
He froze. What the hell?
More noise. A strange sloppy noise.
Issei peeked through the keyhole.
The girl was on her bed, fully naked. She was on all fours with her face pressed into the pillows and her butt raised high. It pointed directly at him.
She was reaching between her legs and rubbing her pussy as if her life depended on it. He could see her fluids run down her thighs. She was soaking wet.
Was this really Katase?
The salmon-colored hair was pretty unmistakable, but-
"Ah, Ise-kun. You like peeking on me? You like looking at my butt?" She wiggled it, unaware the real Issei was staring right at her. Yeah it had to be her. That booty of hers was unmistakable.
Is she… is she fantasising about me?
[Looks like it. Who would have thought that. She actually enjoys it if you peek on her.]
Why doesn't she say it then? I'm happy to peek on her more often?
[She's probably embarrassed about it.]
"Do you get hard when you stare at my butt, Ise-kun?" Katase asked. "It's okay, don't be shy."
It almost sounded like she knew he was there, but that was impossible of course.
"Go ahead and put it in my tight little pussy, Ise-kun." Katase spread herself with one hand. "Sorry I'm not a virgin anymore, Ise-kun."
She wasn't?
"Ah, don't ask me, it's embarrassing," she continued talking to her fantasy.
Issei frowned. Something strange was going on here.
Katase blushed deep pink. "Okay, it's… it's Kiba-kun."
"What?"
Startled, she got up.
"I-Is someone there?" There was fear in her voice.
Issei stayed silent. He could only hope she wouldn't go out of her room.
Katase looked torn. On the one hand, she wanted to confirm she was alone, but putting on her clothes again and checking was a bit too much of a hassle.
After a moment of silence, she shrugged and got back in position.
"Sorry, Ise-kun. I got distracted." She paused. "Oh my, Ise-kun. You're so much bigger than Kiba-kun. I don't think that will fit… you will make it fit? O-Okay."
She opened a drawer and took out a large pink dildo.
Wow, she's really perverted.
[Look who's talking.]
The girl licked it all over. When it was well lubricated, she positioned it at her pussy lips and slowly pushed it in.
"Ah, Ise-kun. Be gentle."
[This opportunity is perfect,] Ddraig pointed out.
Oh, right. He had completely forgotten about the plan.
Issei slowly opened the… opened the…
It's locked.
[Locked? What kind of devil are you?]
Right.
He used a spell to open the lock.
Very slowly, he pushed the door open and sneaked inside.
The girl was too busy fucking herself with her dildo to notice him.
Issei removed his hood and tiptoed closer. He put his hand on her butt.
She yelped and fell on her side.
Issei covered her mouth to muffle the scream that came.
"Shh, you're dreaming." He put some hypnotic powers in his words.
The girl calmed down. He removed his hand again.
"Dreaming?" she slowly asked.
"Yes, of course. Your door is locked, isn't it?
"Locked," she repeated, confused. "Yeah, you're right. I must be dreaming."
"Keep going then."
She nodded.
The girl got back into her doggy-style pose and put the toy back inside. He noticed she was actually going really easy on herself. The toy didn't even go in a third of the way.
"Ah, Ise-kun. Spank my butt. Please."
He cast a spell that blocked the noise before obliging her request.
"Ah, harder."
He did it harder.
"Harder, please."
What kind of masochist was she?
He put some magic into his hand.
She let out a whimper. "Ah, yes, just like that. Hurt me. Make me squeal."
Soon, her butt was red from his slaps.
"Ah, I'm gonna cum," she cried out.
Issei put his hand on her sensitive butt. He cast the spell.
A mark appeared on her left butt cheek.
"Ah, what's going on? I-I can't come."
"You haven't earned it yet," he told her.
She gritted her teeth. "Please. What do I have to do?"
"I want you to spy on Rias for me."
"W-What?"
"Fine, no orgasm for you then."
"No, no. I'll do it, if… if you give me the real thing."
"You want me to…"
"Put your cock in my tight little pussy. Oh please." Her voice was desperate.
I guess I have no choice then.
Issei opened his pants and took out his cock. It was already rock-hard from watching her.
He pulled out the pink dildo and tossed it aside. Katase spread herself for him.
She moaned loudly when he pushed it in.
"Ah, fuck, you're so big."
"Take it all." He slapped her butt again.
"Yes. Don't stop. Force it in completely."
He was in all the way now. His cock was much bigger than her toy, so there was probably nothing that had ever gone so deep inside of her. For a moment, he considered using his dragon powers to make it even bigger, but that might be a little too much for her.
Issei slowly pulled it out almost all the way.
"Don't tease me," she complained. Katase rocked her hips.
He grabbed her hips and slammed his cock inside of her.
She let out a scream.
He started fucking her hard and deep, while she moaned loudly. Her hips met every thrust.
"Ise-kun," she panted. "I want to-"
"Do it. Cum for me." He slapped her butt.
She didn't come quietly. If he hadn't cast a spell, the whole street would have heard her.
Issei fucked her through her orgasm.
It took her a minute before she could speak again.
"Ah, I'm…"
"Shut up. Just take it. I don't care if you're sensitive."
"No, I'm… I want to come again."
[Don't overdo it,] Ddraig warned him. [You remember Rias, don't you?]
I remember.
He looked at Katase. There was already a hazy look in her eyes from just one orgasm. If he overdid it, she would turn into an addict incapable of doing anything else but fucking. While the thought was exciting, he still needed her.
"If you make me cum, you can come with me," he told her.
She immediately responded. Katase moved her hips so fast he was forced to stop his own moves. Her pussy constricted tightly around his cock.
Fuck, she's good.
He tried to hold back, but Katase forced him over very quickly. He didn't even consider pulling out, he simply exploded inside of her.
Katase didn't slow down in the least. He felt her pussy spasms around his cock. Her orgasm lasted really long.
When it was over, he pulled out. Cum leaked out right away.
Katase rolled on her back. Her eyes were glazy and her tongue was out. There were slight burn marks on her breasts from chafing against the bed.
"Katase?"
"I…" she swallowed. "I'll report on Rias. As long as you keep fucking me with your glorious cock."
Issei smiled. "I will."
Katase closed her eyes. A blissful look was frozen on her face.
He cleaned up a little and then tucked her in.
When he was done, Issei locked the door again with magic and jumped out of the window. His wings slowed down his fall enough to land safely.
That went well.
[I'm surprised you could hold back enough.]
No confidence in me?
[You certainly didn't hold back with Rias. And look where it got us.]
I've learned from that mistake, Ddraig.
He got into the car and drove back.
Asia was waiting for him in the living room. She was on her knees, wearing the maid uniform.
"Ise-san."
"Hey Asia."
"How did it go?"
"Good." He came closer to her. "You…"
Asia stood up. She pushed up her chest with her arms. "What do you think?"
He reached out and touched her chest. They were about a cup size bigger compared to before.
"Wow." Issei gave them a squeeze.
"Ah. They are still sensitive."
"Sorry."
"No, no, don't stop please."
"Okay." Gently, he massaged her breasts.
Asia closed her eyes. "That feels good. I-I'll keep going. I'll make them even bigger."
"No, this is big enough."
She blinked. "Big enough for what?"
"Get back on your knees and I'll show you."
He unzipped his pants while Asia kneeled down.
This is gonna be fun.
Summary: Issei goes to Katase's house. He sneaks inside and finds her masturbating while fantasizing about him. Issei uses his magic on her and convinces her to spy on Rias for him. When it's over, he goes back to Asia.