Sero was walking the halls of his school, his school, he liked the sound of that.
'If you really want this to be your school you need to make the devils submit to you.'
Yes yes, Sero supposed he had put that off for too long. Sero thought about how he could take over the devils, when something very fortunate happened. He heard someone clear their throat behind him, "Hello Sero, do you have a minute?" Sero turned to face this voice.
'Oh? How perfect.'
Standing there was none other than the red haired Rias Gremory, a devil heiress, one of two. This was perfect, if he could make her submit then her underlings would have to submit as well meaning he had one of the two devil groups under his thumb.
"Sure, what's up?" Sero responded nonchalantly, restraining his excitement from entering his voice. She crosses her arms under her breasts to make the already massive body parts even bigger looking than they already were.
"I would like to speak to you about joining my club. I think you could seriously benefit from it considering to don't already have a club." Sero lifted his eyebrow, "Oh, would you care to discuss this more in private?" Rias nods, "Of course, I would love to hear any concerns or thoughts."
'Ooooh, she is in full recruitment mode right now, it's kinda turning me on.'
Sero mentally sighs at his horny companion before he and Rias walk into an empty classroom. Sero immediately doubles down on sending out his Sacred Gears energy. Rias's cheeks immediately blush as she clears her throat and pushes her breasts up, unknowingly giving Sero the perfect starting target.
"So, what will it take to get you to join the Occult Research Club?" Sero hums to himself for a minute before he snaps his fingers and gives an audible aha.
'Your not as funny as you think you are.'
Sero pulls a coin from his pocket, "I don't mind joining your club, but let's make it interesting, how about a wager? Tails you win and I join up with you no questions asked, heads and you make me cum."
Rias is obviously shocked by that, but his power had been working away at her resilience and she found herself unable to say no to his request, despite what would happen if she lost.
"Very well degenerate, I accept your challenge." Sero smirks as he flips the coin and let's it land in his palm. He looks and low and behold, heads. Sero shows Rias and she goes pale, "But how, you must have cheated." Sero sighs and shakes his head, "Come now Rias, have some dignity in your loss. Now, lay down on the front desk and take your top off."
Once again Rias couldn't say no to his proposal, so she does as he asks. Sero smiles wide at that, happy he had won, of course it wasn't very difficult with a double headed coin, but whatever.
Sero pulls his dick out and climbs on top of Rias. She still had her bra on, but Sero didn't mind. He slips his dick between her massive chestickels. A solid few inches stick out the other side and poke her chin.
'Oh yes, confession time, I have a major red head fetish.'
Sero mentally rolls his eyes and starts thrusting between the fuck cushions at his disposal. Sero grabs the hands belonging to his newest conquest and puts them at the sides of her breasts, "Hold them tight, your here to make me cum, not put me to sleep."
Rias does as he asks, to enthralled by him to even consider saying no. Sero speeds up his thrusting between the big ol' titties in front of him, enjoying the feeling. Sero had gotten a titfuck from a member of the Kendo Club, but Rias's was on another level.
Her tits were large, but they were also soft. Sero found a pressure building inside him as he starts thrusting even faster into the cleavage hole he was sheathing himself inside of. Sero looks down at the bright red face and lust drunk eyes of his newest pleasure giver, "open wide."
The girl does as she's told and Sero shoves the tip of his dick into her mouth and unloads. Alabaster cum fills up her mouth, bloating her cheeks out, "Swallow." Comes the simple command as Rias obeys and forces the massive load down her throat as more fills her mouth.
She swallows the second helping of seed as Sero pulls out and let's the last few spurts of his orgasm fall on her face. Sero gets off of the Devil heiress as she heavily pants and licks her lips clean of spunk. She uses her fingers to push the spunk on her face into her mouth.
"Well Ms. Gremory, I look forward to your further attempts at recruiting me." Rias sits up and clears her throat, "Yes well, next time you will not find yourself between my breasts, you will find yourself between my ranks." Sero raises an eyebrow at her attempt at being clever in her overly horny state.
Sero could probably take advantage of her in this state and take things further with the red head, but it would be much more fun to take hits time with the Devil Heiress. So for now, he leaves the room but stays behind long enough to hear the moans of Rias attending to her needs.