Just go for it, he's going to be fucking you for a year anyway

You figure you might as well fuck him normally. It'll probably be faster, anyway, and time is important right now. First things first, though. With every ounce of strength you can muster, you slap him across his disgustingly smug face. The sound of the impact is almost as sweet as Sam's yelp. "Oh, fuck off. You know you deserve far worse." As you position yourself between Sam's legs, he replies, "Yeah, I kinda do, don't I? I guess I can forgive you. But if you do anything to my balls I'm going to spend the next year exacting a very long ****."

You don't respond, obviously. He's already gotten partially hard, but it's going to take a bit more work. You grab his cock and take it into your mouth. Now, this situation is pretty fucked up. Sam's not going to be on your Christmas card list anytime soon. But Cindy South does not give half-assed blowjobs. That's simply not an option. Clearly, then, it's not at all surprising to see Sam's cock get rock-hard within half a minute. You play with it for a bit beyond that, but then the time comes to move on. "So, I don't suppose you were planning to eat me out, huh? "Nnnnope!" "Fine. Asshole." You find the bottle of lube Sam discarded last night and straddle him.

"Awww. Aren't you excited for this, Cindy? Just imagine feeling like you did last night every single day for an entire year! I'll even order you to like it even more, that should probably work... Really, I'm doing you a solid here." You are very, very deeply tempted to knee him in the balls. That would not work out well for you in the long run, though, so you resist. Barely. You can't keep from squeezing him a bit harder than absolutely necessary while applying the lube, though. After getting both him and yourself sufficiently slick, it's time.

With a resigned sigh, you point Sam's cock upwards and slowly lower yourself down onto it. It's a bit much, even with the lube, but you steadily work your way further down. "Aaah, fuck! Every day, Cindy! We are absolutely going to be doing this every fucking day!" You almost wish you shared his enthusiasm. When you've taken as much of him as you can, there's still a pretty respectable length of dick sticking out of you. This whole situation is all kinds of fucked, but at least Sam's not some loser who can't get his little3 inch worm up. That's something, at least. Right?

You begin rocking your hips back and forth, and Sam relaxes even more and lets out a contented sigh. He has closed his eyes and settled in for the ride. And in truth, you're starting to feel it too. Not immediately, you definitely need to take it slow at first. But slowly, whether it's his precum, your own fluids, or most likely both, it's starting to feel pretty damn good. You are moving up and down his length more, now, and alternate that motion with a more gyrating one. Going by Sam's occasional gasps, he definitely approves.

Looking down at Sam's chiseled body as you ride him, a thought strikes you. If you take off now, run out the door without looking back, you might just be able to get clear of him. Or at the very least, into some place with other people around to help. Considering this is Shoubu, you'd hardly be the first student to be running through the hallways naked. Hell, you'd probably not be the first today. But if he does catch you before you get outside, things will probably get a whole lot worse for you...