Learn how Kokushibo played a crucial role in helping demon slayers defeat Muzan in this short and informative video. Explore the origin of breathing styles and Kokushibo's contribution to the demon slayers' success. Discover the story behind sun and moon breathing techniques, and how Kokushibo's dedication paved the way for demon slayers to confront the demon king. Don't miss this breakdown of a world without breathing styles to the slayers' ability to face Muzan.

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