Yu-Gi-Oh! (DM, GX, 5D's, Arc-V) X Reader Oneshots (REQUESTS CLOSED)

Mokuba Kaiba X MarikSister!Reader

For UmbreonTrainer06 :)

"Uh, hey bro? You might wanna come see this," Mokuba called to his big brother.

"What is it, Mokuba?" Seto asked, joining his brother at the window.

The younger Kaiba pointed down to the alleyway below, where a blonde guy was trying to corner a girl. She was doing pretty good so far, jumping up and clinging to the alleyway walls, but she was losing energy fast. The guy wasn't.

"Can I go help her?" Mokuba asked.

"Sure. Entertain yourself for a bit," Seto told him, and went back to his work.

Mokuba raced down the stairs to the street level, snagging his whistle off the key rack by the front cave opening- door. Door. He continued his quick pace outside, running into the alleyway and blowing the whistle.

"Hey, buddy, last time I checked, duel disks and decks were the only things you can use to fight during the Battle City tournament!" Mokuba announced.

The blonde guy stopped and turned around. His mouth grew into a sneer and he glared at the kid. "Beat it, kid. Alleyways are no place for-"

"Seto Kaiba's little brother?" the girl exclaimed suddenly. "You're my age, right?"

Startled by the girl's friendliness compared to the guy's anger, Mokuba dropped the whistle and muttered, "Um, yeah sure."

"I am so sorry," the girl added, rushing over to him and picking up the whistle. She cleaned it on her shirt. "My brother and I were just doing our workout for the day. Don't worry, we're not trying to beat each other up."

Mokuba nodded soundlessly. Up close, the girl was really beautiful. She had e/c eyes that were framed by h/c hair. Mokuba mentally compared her features and his and came to the conclusion that she was waaaaaaaaay out of his league.

"I'm Y/n, by the way," she told him. "And your name is Mokuba, if I remember correctly. This is my brother, Marik."

Marik just stared at Mokuba, definitely thinking something along the lines of, "This punk better back his cute little butt up and try not to touch my sister."

"Yeah, nice to meet you," Mokuba replied, ignoring Marik.

Y/n's eyes lit up suddenly. "So is it true that your brother-"

"That's lovely, Y/n. We have to go," Marik interrupted, grabbing her arm.

"Hey, I'm talking to my new friend Mokuba, big brother," Y/n snapped at him. She yanked her arm free and smiled at Mokuba. "Sorry, I guess our meeting's cut short. I'll see you around the city."

Then they were gone, rushing off into the alleyway.

Mokuba sighed and rubbed his eyes. Yeah, she was beautiful and smart, but she was beautiful and smart. In other words, he was not just out of his league...... he was in an entirely different ballpark.

-two years later-

"Hey bro, the holograms are fully operation!" Mokuba announced brightly.

"Good. I don't want this to take any more time than it needs to," Seto replied, stepping into the room.

Mokuba smiled, glancing at the technicians. They wouldn't notice if he just slipped out really quickly, right?

The piece of paper lay on his desk. He quickly picked it up and headed out of the lab, running to ground level and slipping into the alleyway.

A girl leaned against the brick wall, her face hidden by shadows. As Mokuba approached, she slipped a piece of gum out of a wrapper and popped it into her mouth. "Hey, Mokie," she said without looking up.

"Hey, Y/n," Mokuba said. "I got your message."

Y/n stuck her gum wrapper in her pocket. "Want a piece?"
"Sure. Seto never lets me have gum." Mokuba took the gum and began chewing it. "Thanks."

Y/n pushed off the wall. "You look good. Like you've been living the dream."

Mokuba took a deep breath. "I guess I have. You-"

"You don't need to say anything," Y/n muttered. "I know I've been out in the streets for years. I kept an eye on the boy kind enough to check on a girl in trouble."

Mokuba's breath caught. "Y/n-"

Y/n stepped closer to him. "The suit looks better than those kid clothes, Mokuba," she whispered, tugging at the lapels.

The sun cleared the top of the building and shed light on the alleyway as Y/n kissed the younger Kaiba. Mokuba, glad that Y/n was back, and with him, set his hands on her waist. Her dirty shirt and pants covered his suit in grime, but he didn't care. He pulled her closer, wanting to be reassured that she was there.

"I'm glad you spied on me. Even if that's against the law." Mokuba stepped back, but kept her hands in his.

"I've been your shadow," she replied, squeezing his hands. "I know the ins and outs of Kaiba Corp. I could probably work there if I needed to."

Mokuba's eyes lit up. "Seto listens to me. He'll hire you if I beg hard enough."

Y/n smiled. "Thanks, Mokuba."

The two hugged each other, glad that they could stay like that for a while.