Two days prior…
"Naruto, what the hell is wrong with you?" Sasuke screamed at Naruto, shoving him backwards.
"I'm sorry man! I'm tired okay!" Naruto yelled back, taking a step back.
"It was a simple mission, all you had to do was catch that rouge ninja before he escaped, now he's escaped thanks to you," Sasuke toned his voice down a bit, but it was just as nasty.
"You're so useless Naruto," Sakura chimed in, "Why can't you be more like Sasuke?"
Naruto rolled his eyes, threw his hands into the air and stormed off.
Present day
Naruto woke up to a bright and sunny day "Hello mister sun!" he beamed, opening the curtains in his apartment. A little squirrel was waiting at his window, as it did every morning, and Naruto gave it a peanut, "There ya go, now be careful out there," the squirrel ran off with the peanut in its mouth.
He sat down with a pot of cup ramen and went through the day in his head, so I got the morning to myself, and then a mission in the afternoon, shouldn't be too bad. He smiled, finishing his ramen off and stepping outside into the sun. He walked his way over to the training grounds and started doing press-ups.
About 5 minutes later, Sasuke showed up. "Naruto, what the hell are you doing here?" Sasuke groaned annoyed, "If you overwork you'll be useless on missions."
"Ha! You can't overwork Naruto Uzamaki!" Naruto retorted, springing to his feet.
"Suit yourself moron, don't come crying to me when you collapse from exhaustion." He rolled his eyes, walking off with his hands in his pockets.
After training all morning, Naruto made his way to the bridge where they started their missions. Sasuke and Sakura were already waiting for him, "Oh god, I was hoping he wasn't going to show up!" Sakura whispered to Sasuke, who just rolled his eyes.
"Hey guys, how are you?" Naruto beamed, holding his hands behind his head.
"Shut up Naruto, just concentrate on the mission and try not to fuck up this time," Sasuke retorted, staring a dagger into Naruto.
"Whatever, you're just scared I'll outshine you!" Naruto laughed nervously, becoming less and less sure of himself by the day due to the other's remarks. Naruto's way of dealing with it was to push himself harder, which wasn't doing his body any good.
The start of the mission went smoothly enough. They were simply to escort a diplomat to a nearby village about twenty miles away. They got him to the village safely enough, but on the way back they were attacked by thugs.
The fight started well enough, with Sasuke and Sakura blocking blows while Naruto pounded on the enemy with his shadow clones. After half an hour of slugging it out, the battle seemed won.
"Well done everyone!" Naruto chirped, walking over to high five the others. It was then that he collapsed.