

When forced to face an opponent, Haku did all that he could to avoid inflicting great harm, even putting them into a death-like state to prevent them from fighting further, as he did to Sasuke during their battle. Despite his talent for battle, and incredible abilities, Haku disliked needing to kill others in his role as a tool, and avoided doing so whenever possible. Haku was a good-hearted, compliant, and eager shinobi, believing that a person becomes truly strong when they have someone important to protect. Zabuza then trained Haku in the ways of the shinobi, as well as every fighting technique that he knew. However, he was forced to keep moving by Zabuza, and left Kimimaro to be. Haku appeared to sympathise with Kimimaro for his loneliness and lack of purpose by looking into his eyes. In the anime, upon leaving the Land of Water, Haku and Zabuza met Kimimaro. Haku readily accepted this role, due to the purpose it gave him, and devoting his life to becoming the ultimate tool for Zabuza to use. Zabuza later asked Haku to become his "weapon," which meant to become a dedicated shinobi for Zabuza. In time, he was confronted by Zabuza Momochi, a man who had "the same eyes" as him. Orphaned, Haku became a child who was wanted by no one and was forced to take to the cold streets and rummage through trash bins for scraps of food, even sometimes having to fight off the wild dogs that roamed the streets. But before he could, Haku used his Ice Release to create several large ice spikes to kill his father and the rest of the mob. With tears flowing down his eyes, he killed his wife. When Haku's father discovered that his wife and child possessed a kekkei genkai, he assembled a small mob of villagers. Unbeknownst to them, Haku's father had seen everything from the shadows. She harshly scolded and slapped Haku for displaying his ability, though she tearfully apologised to him immediately afterwards. Amazed by this, Haku proudly showed this to his mother, who was horrified by what she saw. One day, Haku discovered the ability to manipulate water. She hid this fact from her husband, hoping that the love and peace that was shared in their small family would last forever. Haku's mother was a wielder of a kekkei genkai: Ice Release. They loved each other, and were kind to their child.

Haku's father and mother were simple farmers, and they lived a peaceful life. Those with kekkei genkai quickly became feared and hated for their abilities, out of concern that their existence would only bring about more war. After the war ended, memories of the horrific battles still lingered in the minds of the people.


In this war, different sides battled each other using ninja, some of whom possessed kekkei genkai. Haku was born in a small, snowy village in the Land of Water, a land that had suffered from war not long before.
