Soulbound: A Hero's Rebirth (MHA, Undertale, DxD crossover)

**Chapter 3: Power Awakening**

The days stretched into months, and as Izuku grew, so did his awareness of the strange and incredible powers beginning to manifest within him. At first, it was subtle-barely noticeable to anyone else. A tingling in his fingers, a strange sensation at the back of his mind that didn't quite feel like his own. But soon, it became impossible to ignore.

It started one quiet afternoon when Inko left Izuku in his playpen to nap. He had been lying on his back, staring at the ceiling, lost in thought. His body was still so small, so helpless, but his mind was buzzing with energy he didn't understand. There was a feeling-almost like something dormant, waiting to be unleashed. And then, without warning, a pulse of energy surged through him.

His small hand, barely able to grip anything yet, twitched uncontrollably. Blue light crackled at his fingertips, bright and shocking against his soft baby skin. And just as suddenly as it had come, the energy fizzled out, leaving Izuku panting, his heart racing. He blinked up at the ceiling, confused.

*"Uh... Sans? What was that?"* Izuku's voice wavered in his mind, his thoughts still reeling from the sudden burst of power.

Sans, who had been unusually quiet, let out a low chuckle. *"Well, looks like you got a little bit of my magic there, kid. That was blue magic-my kind of thing. Guess we're starting to see what this whole fusion deal really means."*

Izuku's eyes widened. Blue magic? That was something Sans had used in battle, wasn't it? He remembered seeing it in Sans's memories-the way he had effortlessly manipulated gravity, turning the tides of fights in his favor with a flick of his wrist. The thought of having that kind of power inside him was both exhilarating and terrifying.

*"But... I didn't even do anything! It just... happened."*

*"Yeah, magic's funny like that,"* Sans replied. *"Sometimes it acts up, especially when you're still gettin' used to it. But don't worry, kid. You'll get the hang of it. Eventually."* He paused, then added with a smirk in his voice, *"Just try not to break anything, okay?"*

Izuku let out a tiny sigh, his baby body still too weak to handle the frustration building inside him. As much as he wanted to get stronger, to understand these powers, he was still trapped in a form that couldn't do much more than crawl.

But that wasn't the end of it.

Over the next few weeks, the strange powers became more frequent. It wasn't just blue magic anymore-he could feel something else stirring deep within him. One For All, the quirk he had inherited from All Might in his past life, hadn't left him. It was still there, dormant but waiting to be called upon.

The first time it happened, he had been practicing crawling around the living room floor. Inko and Hisashi were nearby, watching with proud smiles as their son wobbled and crawled awkwardly, his small limbs struggling to support him. But then, out of nowhere, a surge of strength shot through his legs. His muscles tensed, and before he could stop himself, he shot forward with far more force than a baby should have.

"Wah!" Hisashi exclaimed as Izuku skidded across the floor, bumping into the side of the couch with a soft thud. "What in the-?"

Inko rushed over, her face pale with concern. "Izuku, sweetie, are you okay?" She scooped him up in her arms, her fingers gently checking for any injuries.

Izuku blinked, his mind still racing. What had just happened? That burst of power-it felt familiar. Almost like... One For All.

*"Yikes,"* Sans muttered in his head. *"Looks like you just hit the turbo button there, buddy. That was definitely One For All, but cranked up way too high for a baby body."*

*"I didn't mean to!"* Izuku thought back, panicked. *"It just happened! I couldn't control it!"*

Inko's worried face filled his vision, her green eyes wide with concern. "You're okay, right? You're not hurt?" She hugged him tightly, her voice trembling slightly.