"Sorry Father, but I'm busy." Todoroki said into the phone, watching Izuku build a castle with wooden blocks.

"Shoto, you better not hang up-"

"Good-bye." Todoroki hung up, sighing. His father wanted him to come home for the weekend, but Todoroki had signed up to watch Izuku on both Saturday and Sunday. Not so coincidentally when his father had "scheduled" a training weekend.

He didn't even hesitate in obliterating his father's plans.

"Todo?" Izuku asked. "Your otou-san is Endeavour, right?"

"Yes, he is." Todoroki answered emotionlessly.

"So why is your quirk ice?" Izuku crawled over to him.

Todoroki shook his head. "My quirk is actually half-cold half-hot. The ice is from my mom."

"Ooh. Is that why Kacchan calls you Half'n'half?" Izuku tilted his head to the side.

"I guess so." Todoroki sighed.

"So Todo can make fire, too?"

"Yes."

Izuku's eyes widened. "Show me! Show me!"

"I've sworn off it." Todoroki said.

"But if you don't use it, then when you do, it will be out of control!" Izuku argued.

Todoroki shrugged.

"Did your dad give you your scar?" Izuku asked suddenly.

Todoroki stilled. "No, he did not."

"Then why don't you use your quirk?"

"It's not my quirk, it's my father's." Todoroki softly asserted.

Izuku fiddled with a building block. "Why?"

"It just is."

"But it's yours?" Izuku looked confused. "It belongs to you."

Todoroki sighed. "My father uses his quirk to hurt people. I will not use his quirk."

"Why not just use it to help people? You want to be a hero, right?"

Izuku asks hard questions, Todoroki decided. "Of course I want to be a hero."

"How can you be a good hero if you only use part of your quirk?" Izuku furrowed his little brows together. "Otou-san says heroes give it their all everyday."

"...You're very wise for your age, Izuku-kun." Todoroki finally said.

Izuku giggled. He handed Todoroki the red block.

"So can I see your fire? Pretty please?" Izuku asked his with wide puppy eyes.

Todoroki sighed again and ignited his left hand, holding a ball of fire in his hand.

"Oh!" Izuku stared at the flames, mystified. "Pretty!"

He reached out to touch it, but Todorki gently grabbed his wrist and nudged him away.

"Careful, Izuku." Todoroki sighed, mind flashing to his older brother. "Fire hurts."

Izuku nodded distractedly, still staring at the fire. Todoroki put it out.

"See?" Izuku said excitedly. "It's your power, Todo!"

Todoroki blinked. "What?"

"You made the fire, Todo! Not your stinky poo-poo otou-san." Izuku took the red block back and toddled back to his castle. He put the red block at the very top.

"You're going to be the most awesomest hero, Todo!" Izuku said brightly. Then he froze. "Don't tell Kacchan I said that."

Todoroki felt a chuckle well up in his throat. "I won't," he promised.

Another chapter! I was thinking, since "It's your power!" is such an important part of Todoroki's character development, I better include it somehow. Though, I originally planned this to go differently…

Appreciate you all! ~BlackPolaris