Yes

"Blue! Blue! He's my man! If he can't fuck my brains out, no one can!"

"And I certainly can!"

You moan in pleasure as Blue bends you over the hood of his convertible, your purple cheerleader skirt bunched up around your hips, with your yellow wool top bunched up on the top of your breasts and your panties hanging off one of your ankles. He wastes little time lining up his hungry cock head with your dripping wet slit, and even less time thrusting inwards. Fucking you like this is the reward he decided for himself upon having earned his sixth badge.

It had been a little awkward for you at first, having not really done cheer leading before but you tried your best (though that first Gym Leader, Brock, got quite an eyeful of your panties when you tripped mid routine, leaving him distracted enough for Blue to take advantage of) and eventually you've gotten good enough that you could teach Charmy a few tricks to spice up the act.

But of course, that wasn't the real reason for you having been brought along by Blue, as his heavy thrusting and occasional slaps to your butt remind you. Every time he accomplished something, be it catching a new Pokemon, defeating some random Trainer who met his gaze and conquering a Gym (ESPECIALLY conquering a Gym), he ordered you to perform some kind of sexual "reward" for him that night. You've lost count of how many handjobs, blowjobs, tit fuckings and other such lewd acts he made you do almost constantly now, since he did seem to be more than empty boasts regarding his skills as a Pokemon Trainer.

As his free hand reaches around to grope one of your swaying breasts, his flesh continuing to slap against yours as his cock stimulates your insides, a part of you is glad that he does save fucking your pussy for major accomplishments like this. The physical pleasure combined with the thrill of thinking this might be the time his seed takes root in your womb is unlike anything you've ever felt in any other aspect of your life. This, more than anything, is probably what lead to your will eventually breaking.

You're a little hazy on when exactly it happened, you think it might have been some time between the third and fourth Gyms, but suddenly you noticed yourself thinking everything Blue said, thought or did was utterly brilliant and awe-inspiring. The greatest non-sexual feeling you had was being around him or hanging off his arm and one of the happiest moments of your life was when he placed a collar around your neck with an attached dog tag that had the inscription, "Property of Blue".

"Ah, Red," Blue groaned, his thrusts gaining speed and intensity as he leans over you, growling in your ear, "My little Loser. Didn't I tell ya.. that belonging to me would be better for ya?"

"YES YES YES," you all but scream as he continues to stir up your insides, "I'm your Loser! I belong to you! And it makes me so happy! Fuck me! Use me! I'm yours!"

"That's right," he growls harder, "You're mine... FOREVER!"

Then he slams home one last time and you scream with orgasmic glee as you feel his hot, pulsing cock once more filling you to the brim with his cum, your cunt milking him eagerly for every last drop.

Blue then goes on to continue his meteoric rise through the League, becoming the youngest (and longest reigning) Champion in its history, his signatures being the powerful Pikachu he raised as his very first Pokemon and the cheerleader always behind him with whom he ends up having many children with. It is an exciting journey, one with thrilling battles and lots of sex.

However, it is not really YOUR Pokemon Journey. That was ended the very night you accepted Blue's proposal and became a supporting cast of his adventure.

While certainly not the worst of fates, and you can't say you're unhappy being like this, how might have things turned out if only you'd tried to stand on your own?