"What's with that look? What could take up your time so much you can't study for a few hours?"
…Actually, she was kind of right. Sex might happen a lot, but he mostly just relaxed the rest of the day afterwards; it was due to only his need to have a quiet time after sex that was hampering his studies.
Iruka gave a sigh. "Look…you're a good student when you're in class, Uzumaki-kun. I'd like for you to do well, but unless you want to come in for some tutoring after classes, there's not much I can do."
Naruto was about to reply when his eyes caught the window behind her, where Hanabi held up a large sign saying 'Just DO it!'
He deadpanned at her before turning his attention back to the teacher. "W-well… uh, maybe that could help?"
Iruka blinked. "Wait, you want to be tutored?" She tilted her head in confusion before nodding. "Well…I suppose, since I offered and you feel responsible enough for your grades…very well, meet me after school and we'll get started. I have a lot of free time myself, so I should be able to work at whatever you're having trouble with."
Feeling a little out of his depth, Naruto nodded. Hanabi held up another sign.
'Make sure to ask her to up my grades when you bang!'
While Iruka's back was turned, Naruto grabbed a eraser from the board and threw it through the open window, smacking against the sign and causing Hanabi to duck out of sight. He thought he heard her giggling and rolled his eyes. Holy crap does that girl have problems!
He denied the slight thought that her laughter was kind of cute; he squashed on it hard and suffocated it.
GoF
"S-so, what did Iruka-sensei want to talk to you about?" asked Sakura. The pink-haired girl had waited outside the classroom for him and walked with him down the hallway.
"Ah, she offered to give me some private tutoring to help with my grades," he said, "I said yes, since I do kinda need help with my studying, what with Hanabi more or less throwing the other girls at me."
Sakura giggled. She had in fact learned a while ago of Naruto's sex life. She wasn't exactly sure she wanted to fully commit herself however, so she usually kept out of the group besides her best friend Ino, plus Hanabi, who wouldn't leave her alone about it. She was slowly coming around to the idea though, since Naruto really was a nice guy. "…Y-you know, uh, I could maybe…help you too?"
She also nursed a major crush on him, which was helping her decision as well.
"What, really?" asked Naruto hopefully, unaware of the thoughts in his pink-haired friend's mind, "That'd be great! Oh, but, uh, when and where would we do that?"
Blushing, Sakura suggested, "Uh, my house, I guess. My parents will…will be out…so…"
Naruto nodded along, not seeing anything wrong with the idea, not aware of the idea that 'my parents are going out tonight' meant something more. "Alright, thanks! With you and Iruka-sensei, I should be able to catch up with my year in no time!"
GoF
At lunchtime, once he'd finished eating, Naruto went with the pink-haired girl to the school library.
At first it was simply picking out 'source material' for their future study session…but then they found the library was really empty at the time, so…
Before he knew it, the two of them were sequestered in a distant corner of the room, hidden from sight by bookshelves. In the narrow space between shelves, Sakura was pressed up against him, her backside almost grinding into his hips as she tried to retrieve a book. The blond boy suppressed a groan as he registered a good deal of firm, warm flesh rubbing against his crotch.
"Ah…I-Ino said you liked how big my butt was…d-does it feel good?" she asked shyly. Her breath was short and filled with newly-found arousal as she continued massaging Naruto's hard, still clothed dick with her ass. Close up, he was able to see how her shorts clung to the round globes and her thickening thighs. "It-it's been getting pretty big recently, so my shorts have been getting really tight…"
Naruto gave a hiss of satisfaction as he squeezed her pert, round buttcheeks through her shorts, feeling the warm flesh underneath. "Yeah, I like that a lot," he whispered in her ear, "I think I'd like it even better with you out of them…"
Sakura shivered at the feeling of Naruto's voice on her ear, as well as the large bulge nudging at the area between her cheeks through both their clothes. She couldn't get out of them fast enough to show him upon his request. She did, however, blush at the belated memory that she wasn't wearing panties today.
Naruto immediately groped her thighs upon them being exposed and resumed humping her sensitive backside once again. Sakura tried to focus on the task futily, but the direct stimulation was incredibly distracting; mostly she grasped at the shelves of books to keep standing and rubbing against Naruto. The hot, hard tent in his pants thrust between her creamy buttcheeks, accompanied by his harsh breathing in her ear. "H-hey, Naruto-chan! Aren't you gonna t-take yours off too?" she asked shrilly, trying to keep her voice down.
Naruto shuddered, seeming to come out of a daze. "H-huh? Oh, right, sorry. Your ass is so soft I couldn't help myself…" He took a step back (or tried to; the space really was a bit cramped) and pulled down his underwear, letting his hard-on spring free. "Ah~ That's better," he sighed, letting his swollen shaft rest on his pink-haired friend's asscrack. "Mm…your butt feels a lot like Sasa-chan's."
Sakura flushed as she felt the familiar, meaty pole rest on her plush behind. Her hips gave a happy shake from Naruto's ministrations made, bouncing his dick back and forth from one cheek to another. She yelped a little when she felt his arms loop around and cup her still developing bust.
"Ah… I-I don't really have that much…" She breathlessly commented, but bit her lip as Naruto's fingers groped at her, a new wave of pleasure captivated her attention. Her nipples hardened under her shirt, making her squeak when his fingers brushed and pinched them gently. Her nether regions tingled warmly as she wiggled her hips some more, sandwiching Naruto's fat shaft between her pale butt-globes.