My Hero Academia: Ruby and Emerald

Chapter 15: Younger Midoriya Izuku POV

Izuku was just setting down his backpack when Kacchan entered the classroom.

“Good morning, Kacchan!” Izuku greeted him. Kacchan’s gaze whipped around to meet his, absolutely abnormal and startling in its intensity.

“Deku?” Kacchan asked.

“Uh, yeah? Good morning?” he answered. Kacchan blinked hard, then refocused on Izuku.

“Right! Good morning, Deku!” he greeted, cheerfully. A few seats away, one of Kacchan’s friends, the one with the finger-extension quirk, stood up.

“Hey, man, are you okay? You’re not really acting like yourself,” he asked, shooting Izuku a dirty look as if it was his fault Kacchan was being weird.

Suddenly, the door to the classroom flew open with a bang! In the doorway stood…

Kacchan?

Wait—

But—

What?

“Himiko,” the Kacchan in the doorway growled.

“Oops!” the first Kacchan—Himiko?—giggled.

Where had Izuku heard that name?

It occurred to him as her face started dripping. How had he forgotten?

“You’re Kacchan’s new sister!” Izuku declared triumphantly, smacking his fist against his palm.

“Yep!” said Himiko, still wearing Kacchan’s gakuran. Maybe her quirk didn’t extend to clothing? “And you’re Deku! I’ve heard so much about you!”

“You, uh, you have?” Izuku asked, a little bit of hope leaking into his voice.

“Yeah! Katsuki-nii-chan talks about you all the time! He’s all Deku this and Deku that, and—”

“I do not do that!” Kacchan interjected. Himiko carried on like she hadn’t heard him.

“—and then Katsuma-nii is always getting on his case, too, all be nice and not everything is a competition! Except the only reason I know those are about you is because Katsuki-nii always shouts at Katsuma-nii—eep!”

Himiko was silenced by Kacchan’s hands wrapped around her jaw, completely covering her mouth.

“Shut the fuck up,” Kacchan demanded, voice simmering with barely-repressed anger. “What the hell are you doing here?”

Himiko batted her eyes, the corners of them crinkling with glee.

“Uh, Kacchan? She can’t answer with you holding her mouth shut like that,” Izuku pointed out. Kacchan glared at him, but released Himiko anyway.

Himiko took a bouncing step away from Kacchan. “I wanted to meet your friends! I get lonely staying at home, y’know!” she pouted.

“What, so you decided you’d disguise yourself as me and come harass my classmates?” Kacchan spat. Himiko shrugged.

“Mom said I could.”

Izuku was fascinated. Himiko didn’t make much sense, but Kacchan hadn’t exploded her yet! Maybe it was because they lived together? Would exploding his sister get Kacchan in trouble? Izuku didn’t know.

“What the fuck? Why would mom agree to this shit?” Kacchan raged.

“She said it would be funny! She was right!” Himiko cheered. She bounced over to Izuku, lifting a hand to his chin. “You were right, too, Deku is—”

Whatever she had been about to say, Izuku would never know. Kacchan had tackled her.

“Shut the fuck up!” Kacchan demanded, ears red. “Go home!”