what if Shigaraki was Infinite the Jackals reincarnation

The Weight of Strength

Izuku was no stranger to tough training, but when his martial arts instructor handed him a solid, heavy turtle shell, he could hardly believe his ears."Wear this," the instructor said, their face serious. "This is a fifty-pound training shell. You're going to carry it on your back and train with it every day. Run, jump, strike—do everything with this on until the day of the World Martial Arts Tournament. Only take it off to sleep and shower."Izuku's eyes widened as he took the shell, feeling the weight settle on his shoulders. "This... this is heavier than I thought!"The instructor nodded approvingly. "That's the point. You've mastered speed, but if you want to make that speed count, you need the strength to match it. The weight will help you build muscle and stamina, especially since you can already move so fast. When you're able to run at full speed again with this shell, we'll double the weight. Think of it as training your body to handle and maximize your power."Izuku nodded, strapping the shell onto his back, determination sparking in his eyes. He took a deep breath and dashed forward, immediately feeling the drag of the weight. His legs strained, his back ached, and he could feel every ounce of the shell as it slowed him down. But it only fueled his resolve.As days turned into weeks, Izuku incorporated the turtle shell into every aspect of his training. Running through town, practicing his punches and kicks—he even ran up stairs and through obstacle courses with the weight pressing down on him. Each day, he could feel himself becoming stronger, his body adjusting to the added strain. The shell was heavy, but he learned to move with it, to incorporate its weight into his movements until, slowly, he was regaining his original speed.By the time the World Martial Arts Tournament approached, Izuku's movements had grown fluid, even with the shell on his back. He had transformed from a pure speedster into something else—fast, powerful, and resilient. His instructor watched his progress with pride, knowing that when the time came, Izuku would be ready for the next level. The training shell had become more than just a weight; it was a symbol of his determination, and he wore it proudly as he prepared for the challenges ahead.