It all started last night, the anniversary of the day the beautiful devil girl met the man of her dreams and Rias was prepared to give Issei the night of his life. Wearing nothing but a towel, she was ready to embrace her inner slut and finally give Issei the smoking hot body that he had fantasized about for so long. However, when she walked into Issei's room, what she saw shook her to the core. So many emotions of shook, anger, jealousy and betrayal overtook the redheaded bombshell. She saw Akeno sucking Issei off. Completely naked and her long, lucious raven hair down from it's usually ponytail, Akeno gave Rias a smug expression as she still had Issei's cock in her mouth. Infuriated, Rias pounced on Akeno, initiating a vicious catfight. They pulled hair, squeezed tits, slapped asses and wrestled all around the room. Akeno treating it like a game, giggling and never losing that elegant smile all while Rias was screaming bloody murder and trying to yank her best friend's hair out. Issei considered stopping them, but being Issei, he'd much rather watch the two busty babes wrestle each other over him.

The other girls, woken up by the display, broke up the fight. Rather than just apologize and let it be done with, Rias ordered Akeno to bathe with her tomorrow morning, where they'd settle it in any manner they deemed fit. Akeno agreed before turning her head and winking at Issei, who had no idea what either of his girlfriends had in mind for their little bathtime bonding session but regardless, he wished he could watch.

The next morning, Rias and Akeno stripped down and relaxed in the massive bath, almost big enough to be a swimming pool. The awkward tension prevented Rias from speaking but Akeno was having fun, her flowing, black hair let loose as she swam towards Rias and began running her fingers through her long, lucious red tresses with one hand and circling her fingers around her stiff nipples with the other. Rias blushed as her friend played with her, before turning around and finally saying something.

"Why would you do that to me, Akeno?" Rias asked in a hurt tone. "You knew I wanted to have my special night with Issei."

"I'm sorry, Prez." Akeno said in her usual sultry tone. "But I thought you two could use some company. Besides, you know for a fact that he has more than enough stamina to please both of us."

Rias flinched as Akeno rubbed her nipples and then began nibbling on her best friend's ear.

"Let me make it up to you." Akeno said as she kissed Rias's cheeks.

"I'm being serious!" Rias protested as Akeno grabbed her face, turned her around and pulled her into a wet, passionate kiss.

Rias tried to protest but Akeno's tongue in her mouth soothed her so much that she relented and just enjoyed making out with her best friend. Their hands in each other's hair and their tongues battling for dominance, Akeno broke the kiss and began sucking on Rias's right breast while fonlding her left. Rias threw her head back, making her beautiful, long red hair bounce as Akeno pleasured her before the seductive raven lowered her hand from Rias's right breast down to her pussy. The sudden sensation made Rias realize what Akeno was trying to do. She yanked on Akeno's hair, pulling her mouth away from her tit and glared at her in the eyes.

"Nice try, bitch!" Rias declared. "But you can't distract me from what you did!"

"Oh, just relax." Akeno said in a mildly annoyed tone. "You know this is how all our arguments end."

"Not this time!" Rias said. "You fucked up our anniversary and not even your tongue in my pussy will fix that!"

"What's wrong, bimbo?" Akeno teased. "Afraid that our boyfriend likes my skills in bed better?"

"Are you kidding me?!" Rias shouted. "I'm the one he dreams about every night!"

"That didn't stop him from letting me blow him, though. Did it?" Akeno taunted.

"If you're so confident in your sex skills, why don't you prove it, slut?!" Rias challenged.

"Oh? A sexfight then?" Akeno asked.

"Damn straight!" Rias declared. "And we keep fucking until one of can't anymore!"

"Alright, babe. You're on." Akeno said as the two busty beauties pounced on each other in the water.