★ Based on the latest survey data on Korean adolescents, this book sheds light on pervasive issues in schools, such as online harassment affecting 38.1% of children and everyday physical‑touch violations, directly addressing blind spots in education.
★ The author is a frontline primary school teacher and mother of two, combining an educational background with maternal care; the content draws from real‑life classroom observations, making it both credible and relatable.
★ By embedding the abstract concept of “consent” into children’s everyday social interactions—such as high‑fives, borrowing items, or sharing photos—the book makes the topic vivid and easy to understand, without coming across as preachy.
★ It offers a approach: teaching children to confidently say “no” and protect their personal boundaries, while also helping them read others’ expressions and respect unspoken refusals, thereby fostering empathy.
★ Extending into digital etiquette and virtual boundaries, the book equips children to recognize dangers lurking behind screens, aligning with the social‑safety needs of today’s digitally connected generation.

When a child says, “It’s okay,” their heart may be bleeding: Have we taught the “consent” lesson—something more important than grades?
“Smack!” During recess, a boy, trying to show affection, suddenly slapped his classmate on the back. The recipient stumbled, their smile freezing instantly, replaced by a frown and slightly reddened eyes. The boy, unfazed, waved it off with a casual, “Hey, we’re friends—just kidding. Why are you being so petty?”

This is an all-too‑familiar scene in elementary school teacher Kim Jeong’s classroom. Yet that light‑hearted “We’re friends” feels like a tiny thorn, pricking the heart of the child who was hit—and perhaps lingering as a dull ache long after.

We often teach kids to “fit in” and be “generous,” but we forget to tell them this: even with good friends, your body and your feelings have a sacred, inviolable boundary.

The Invisible War in the Classroom: When “Closeness” Becomes an Excuse for Violation
In children’s world, “consent” is an abstract, distant concept. They don’t realize that from sharing a cookie to holding hands during a game, or posting a funny photo of a friend online, every social interaction carries a deeper question: “Do you feel comfortable with this?”

Sadly, the answer is often no.

According to the latest data from the Korean Youth Policy Institute (2025) and the Ministry of Gender Equality and Family (2026), boundary violations in schools are far more common than we imagine. Many elementary students experience “everyday infringements” from their peers: unwanted physical contact, photos and videos shared without permission.

Even more alarming, 38.1% of child and adolescent victims of sexual crimes were abused by someone they met through online chats. As digital communication blurs the lines between “mine” and “yours,” and “friend requests” can be accepted with a single click, the dangers kids face have spread beyond face‑to‑face shoves into the unseen currents of cyberspace.

Teaching children what consent means is no longer just an awkward chapter in sex education; it has become a mandatory lesson for safeguarding their present and future physical and emotional well‑being.

More Than Just a High Five: A Lesson in Respect and Courage
It was these silent tears and confusions in the classroom that inspired veteran teacher Kim Jeong to write “Even a High Five Needs Consent.”

This is not a lofty, preachy manual, but a warm, practical “compass” for relationships. It avoids dry theory, instead using real‑life “small conflicts” that children encounter at school, at home, and online to break down the abstract concept of consent and make it truly understandable.

From “My Body” to “My Heart”: This book tells kids that their bodies belong to them alone. From “Can I refuse to hold your hand?” to “I don’t like this joke,” you have the right to say no to anything that makes you uncomfortable. That’s not being “uncool”—it’s self‑respect.

From “Borrowing an Eraser” to “Digital Boundaries”: Ask before borrowing something; ask even more before forwarding someone’s photo. The book integrates digital etiquette into daily life, teaching children to uphold real‑world standards in the virtual world and recognize the warning signs lurking behind screens.

From “Self‑Centeredness” to “Empathy”: It gently guides those carefree, impulsive kids to learn to read others’ faces and hear the unspoken “no.” A true friend doesn’t assume, “I think you’re fine,” but respects your feelings.

A Child Who Understands Consent Gains More Sophisticated Social Skills
What makes this book so moving is that it teaches children not only how to say “no,” but also how to say “yes” with confidence. When kids clearly know where their boundaries lie, they can enter relationships with greater ease and openness.

They will earn respect while respecting others; they will defend their own rights while learning to consider others. This kind of social competence, built on mutual respect, is the strongest armor and the warmest light a child will carry through life.

With wisdom honed over years in the classroom, Teacher Kim Jeong reminds us: the best protection isn’t keeping children sheltered in our arms, but teaching them to guard their own inner sanctum and to knock politely on others’ doors.

If your child has ever silently endured because “they didn’t want to cause trouble,” or upset a friend for “not reading the room,” then open this book together. Because even a high five between friends deserves a sincere, “Is that okay?”

Let’s teach our children that true intimacy begins with respecting each other’s boundaries. It’s not just about protection—it’s a lifelong capacity for love.

Kim Jeong (Kim Si-yun)
As a primary school teacher and mother of two, she works as an author and illustrator of children’s books. She graduated from the Department of Korean Language Education at Seoul National University of Education and earned a master’s degree in Korean language education from the university’s graduate school.

She has developed teaching materials for Korean-language textbooks, the Dong-A Yonsei Elementary Korean Dictionary, and the Gyowon Red Pen Korean Dictionary. Her book “Fifth-Grade Students, Enhance Your Writing Skills” was awarded the 2017 Sejong Book Prize in the general category. Other published works include “No Dong-hwa of Fifth Grade Class Five Becomes the King of Perfect Scores in Korean,” “The Sweet-Sweet Elementary Korean Concept Dictionary,” and “The Sweet-Sweet Children’s Word and Phrase Dictionary.”

Chapter Introductions

Chapter 1: What Is Consent? (Building Awareness)
Chapter 2: Not Everyone Feels the Same Way (Understanding Emotions)
Chapter 3: I Protect My Body and Mind (Self-Defense)
Chapter 4: We Protect Ourselves (The Digital Age and Group Dynamics)


Included Teaching Tools

Emotion Traffic Light Cards (to help identify emotional states)
Consent Scenario Card Game (to practice coping strategies through role-playing)