Oki Yoki Becomes a Big Brother

Becoming a big sibling is a big change—and Oki Yoki is learning all about it.

In Oki Yoki Becomes a Big Brother, Oki welcomes his baby sister, Coki Yoki, and navigates new emotions as life at home begins to feel different. With gentle guidance from Mama, Dad, and Grandma, Oki learns that being a big brother means helping, caring, and loving—even when it’s hard.

This beautifully illustrated story supports children through sibling transitions while reinforcing emotional awareness, patience, and family love.

Why Parents & Educators Love It

• Perfect for ages 1-8
• Helps children process big feelings
• Encourages emotional expression and resilience
• Supports self-confidence and identity
• Includes an Educator & Parent Note
• Ready by Five certified