Cover of a children's book titled 'Harold's Friendship Friction' with a subtitle 'A Story About Relationships Changing.' It is part of the Harold Chronicles series, book 26, suitable for ages 10-12. The cover features two boys sitting on grass, one holding a book and the other holding a football, with a school building and trees in the background.

Harold’s Friendship Friction (Book 26)

Changing interests. A growing distance. A new normal.

✅ Laugh-out-loud chaos that kids actually finish

✅ Fast chapters + high momentum for reluctant readers

✅ A gentle life-lesson: changing friendships without the lecture

COMING SOON - JOIN THE WAUTLIST

🔀 About the Book

As high school deepens, Harold and Murphy drift toward entirely different interests. Harold must learn that a friendship changing shape doesn't mean it has failed.

Harold Mitchell is fourteen years old and stubbornly refusing to accept that things are changing. While his best friend Murphy is suddenly obsessed with new hobbies and new people, Harold tries desperately (and disastrously) to force everything to stay exactly the way it was in primary school.

This is the story of what happens when growing up pulls you in different directions, and the hilarious, bittersweet reality of learning to let friendships evolve.

The SEL Focus: Navigating Changing Friendships Target Age: 14–15 (Arc 5: The Growing Up Years)

  • Different interests and expectations create tension.

  • Harold learns communication, empathy and acceptance.

  • It supports healthy relationship skills and conflict resolution.

Buy the Paperback

Advertisement for buying a print book of Hazardous Harold, a children's story about a science fair disaster. Features a colorful cartoon cover with a boy in goggles and a melting volcano. Green background with white, yellow, and blue text, and a white section with a kangaroo logo and the words 'Killara Press'.
Online shopping banner with a blue background, a shopping cart filled with country flags representing the UK, EU, US, Canada, Australia, and New Zealand, and text promoting international purchasing with local pricing, fulfillment, and delivery options.
Black rectangular button with white Amazon logo and text that reads 'Buy on Amazon' and 'Prefer to buy on Amazon' with a white arrow icon on the right.
A young boy with messy blonde hair lying on a pink, messy substance, looking at the camera with a smile, accompanied by a happy puppy, surrounded by books, a beaker, goggles, a notebook with a light bulb drawing, and colorful signs with the words "Read," "Laugh," and "Learn."

Buy the eBook

Advertisement for purchasing eBooks from Killara Press, featuring a children's book titled 'The Misadventures of Hazardous Harold' with an illustration of a boy and an eBook reader showing the story.
Purple digital advertisement banner with a shopping cart filled with icons for Apple Books, Rakuten Kobo, Barnes & Noble, Google Play Books, and more, promoting buying from favorite bookstores worldwide.
An orange button with the Kindle logo and text saying 'BUY ON KINDLE' and 'Prefer to read on Kindle'
A young boy with orange hair lying on the floor with pink slime on his face and clothes, accompanied by a happy puppy with a collar labeled 'SPIKE'. The scene includes books, safety goggles, a test tube, a notebook with a light bulb drawing, and colorful signs that say 'Read', 'Laugh', and 'Learn', surrounded by stars.
A promotional graphic for the ARC 5 Series book bundle from Killara Press, featuring a cover image of the book "The Misadventures of Hazardous Harold: Life Lessons Through Laughter" and a call to action to buy the complete ARC 5 Series at a 20% discount.
White upward arrow on a blue square background.