The first one to make a move was Lee who jumped into a kick, "Dynamic entry!"
Kirishima blocked it but was sent skidding a few meters. He shook his arms out, "Man he packs a punch!" He rushed in and went for some punches, but Lee dodged with grace and grabbed Kirishima's arm, flipping him over himself. However, Kirishima landed on his feet and went for a huge punch at Lee.
Lee blocked it, but it shattered something. Some of the girls covered their mouths and Momo said, "Did he break his arm?"
Sasuke replied, "That didn't sound like a bone crack."
Kirishima reeled back frowning, "Woah! Sorry, I must have punched too hard."
Lee smiled and rolled up his green sleeves above his bandages, allowing crumbled pieces of his weights to fall to the ground, making small craters. "No need to apologize. I'll have to take that as a sign to let loose," he side-eyed Gai and Gai nodded.
"Show them everything you got, Lee!"
Lee proceeded to undo the other three weights on each limb and tossed them to the side, with each one sounding like a wrecking ball crashing into the floor.
Kirishima and a lot of students gawked at them. Midoriya asked, "How heavy are those things!?"
Gai crossed his arms with a proud smile, "Those weights weigh as much as him. I'll have to make sure to increase them when we get back home!"
Naruto scoffed, "Bushy-brows is tough!"
Kaminari exclaimed, "How can someone move around like that with all that weight?! You gotta be messing with us, he totally has some kind of super-strength quirk."
Gai snickered, "The only power Lee needs is the power of youth! He's just a very physically gifted boy."
Lee dove at Kirishima's feet and kicked him into the air. Kirishima barely had time to harden in response and felt a small crack in his hardening, 'Wow, I would have thought the weights were the reason I felt so much force behind those hits, but he hits even harder now!'
Lee jumped up and axe-kicked Kirishima into the ground, summoning a smoke cloud. Through the smoke, Kirishima recovered and punched Lee through the smoke. He barely dodged, his cheek getting cut on Kirishima's jagged skin.
He smiled, "I'm glad you can still keep up! You're a strong opponent."
Kirishima replied, "Same to you, you're super fast, but it's gonna take a lot more than that to put me down."
Kirishima hardened his whole body and got into an exchange of punches and kicks with Lee. Lee was able to dodge all of Kirishima's hits and land some blows, although they wouldn't do more damage than leaving small cracks in his armor.
Jiro said, "He's done a good job of keeping up, but there's really only so much you can do without a quirk. It doesn't look like he's gonna make it any further in the fight than this."
Gai shook his head, "You're judging too early, pay closer attention."
Lee started focusing all of his hits on Kirishima's side, weaving and landing kicks and hooks in there, putting more and more small cracks in his hardened skin until he broke through and sent Kirishima rolling on the floor.
Lee's knuckles were bleeding, but he smiled and Tsunade got ready to call the fight, but Kirishima stood up cracking his neck. "You got me good there, but I still got more up my sleeve."
Kirishima's skin hardened even more, more than anyone had seen before, 'Red Riot Unbreakable!'
Lee wiped the sweat off his brow, "You truly are amazing."

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Along The Path Of Vengeance(Sasuke/Mha crossover(Naruto)
FanfictionSasuke was born with a quirk like everyone else, although unlike everyone else his family was killed by All For One when he was 9. Since then his hatred drives him to seek power at UA High School, but what else will he find at this school? Allies? F...