This book is a practical guide for puberty girls to cross the minefield of adolescence, which invites readers to reflect on the importance of accepting and accepting change. Kyungsun Lee is an author and illustrator for this book. She also participated in book design too. With more than 200 illustrations, it explains the transition from childhood to adulthood clearly and sensitively. This book has been published in Korean, Vietnamese, Chinese and Italian. It is an edition for Italian.