★ Featuring Kakao Friends, Korea's beloved national cartoon characters, in an emotion-themed picture book series written by a Bologna Ragazzi Award-winning author. Focusing on sadness, fear, and anger, paired with an accompanying activity book. Adorable characters, heartwarming stories.
★ Helping children understand emotions through stories and play. Each volume authentically presents common emotional struggles children face. Rather than judging right or wrong, the series guides children toward accepting their feelings, learning to express themselves, and finding reconciliation.
★ Storybooks plus play-based exercises. The first three volumes are perfect for parent-child reading and discussing emotions together. Volume 4 (the activity book) uses colouring, stickers, mazes, and other hands‑on activities to help children reinforce emotional management and social skills through active participation.

The series includes 4 titles:
Tube and the Blanket Fort (Sad)
Apeach and Treasure Island (Afraid)
Muzi and the Icicle Ice Cream (Angry)
The Kakao Friends Feelings Activity Book

Eager to play with friends, Tube rushes over but trips on a stone and falls. Tube’s small mistake unexpectedly lands friends in trouble... Feeling sorry and afraid, Tube hides deep inside a blanket fort. Can Tube muster the courage to come back out? This emotional growth picture book offers warm reassurance that it’s okay to make mistakes, playfully addresses the emotion of fear, and naturally conveys the meaning of self-acceptance and courage.

Young-eun An(Text)
Graduated from the Department of Child Studies at Sungkyunkwan University, and majored in Children's Culture at Sookmyung Women's University Graduate School.
Won the 2015 Bologna International Children's Book Fair Best Children's Book Award for The World's Biggest Cake. Currently a beloved television program writer for children. Her works include Hello, Tiger, I Want to Become a Witch, and Good Language Habits: Welcome to the Dialogue Kingdom!

Hyo-gyeong Lee(Illustrations)
An illustrator who keeps two parrots as gentle as puppies and depicts warm, peaceful everyday moments. She has written and illustrated the picture book Cream Star Cactusand the illustrated essay Today Is Also a Pretty Good Day. She has illustrated the picture books Ice Cream of Snowman Village, Xylophone Jumping Stones, Oh! Cherry Tomatoes, Don't Cry, Speak Up, and the poetry collection Poetry Department Store.