Musashi was one of several fighters who sought to master Genkai's techniques. He's best known for his match against Kuwabara during the tournament's fourth test, which he lost.
His main strength lies in masking his spirit energy—a technique that lets him become invisible to those with strong spirit awareness in dark spaces. Kuwabara, despite his heightened senses, couldn't track him this way. Musashi wielded a sword carved from a holy tree and sanctified in a sacred stream, making it a formidable weapon. Interestingly, when a chunk of the blade broke off during his fight with Kuwabara, that fragment became crucial to Kuwabara's development—it's actually what led him to discover and unlock his Spirit Sword abilities.
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