A/N: Here is another little one-shot starring everyone's favorite brothers, Seto and Mokuba Kaiba. Hope everyone enjoys this.

Disclaimer: I don't own Yu-Gi-Oh or any of the characters, Kazuki Takahashi does.

...

Seven-year-old Seto stared down at the baby lying in the crib. He was so tiny...

"Mokuba..." Seto whispered the infant's name. That was the name his mother had given Seto's new baby brother.

The baby looked up at him with big, violet-gray eyes and cooed softly.

"Hi, Mokuba," the older boy said, waving at him.

"You're Mokuba's older brother," Seto's father had told the boy when Mokuba came home from the hospital with his mother. "It's your job to look after him. And if anything ever happens to your mother and I, we know you'll always take good care of him."

"You are cute, aren't you?" Seto smiled, running his little fingers through Mokuba's fringe of black hair.

"Ba!" Mokuba exclaimed, giggling and staring up at his big brother with those big, violet-gray eyes that were filled with what looked like adoration.

"Mom and dad were right," Seto said as his little brother's tiny fingers wrapped around on of his. "I'll always take care of you, Mokie."

Mokuba giggled at the sound of the nickname.

"You like that?" Seto asked smiling.

Mokuba giggled once again in response.

"Okay then," Seto laughed. "Mokie it is."

Mokuba yawned and curled up into a little ball before falling asleep.

"I'll always protect you, Mokuba. I promise,' Seto whispered before giving his sleeping brother a kiss on the forehead. "I'll always be there for you."

...

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So, how was it? Let me know.