The Monster Who Lost Its Heart

What Is a Heart?
A picture book that explores joy, anger, sadness, and happiness—feelings we experience with our hearts.

The monster Oruga had no heart.
Once, he was betrayed by his best friend.
Hurt and furious, he lashed out in anger—
and before he knew it, his friend was gone.

No matter how much he cried, nothing could go back to the way it was.
And little by little, Oruga lost his heart.

Have you ever felt so sad, so hurt,
or so overwhelmed that you wished you could just stop feeling altogether?
“Maybe it would be easier if I didn’t have a heart at all...”
Many of us have felt that way at least once.

This is the story of Oruga,
a monster who lost his heart from deep sadness.

Through Oruga’s journey, this book invites readers to reflect on the importance of feelings—
joy, anger, sadness, happiness—
and what it truly means to have a heart.