Kozo Kanamori is a character who may not be in the spotlight all the time, but his presence in Demon Slayer (Kimetsu no Yaiba) carries significant weight. Introduced later in the series, Kozo Kanamori quickly becomes a memorable figure as the father of Genya Shinazugawa and the older brother of Sanemi Shinazugawa. Standing out with his tall, sturdy build, black hair, and signature mustache, Kozo Kanamori cuts a distinctive figure—especially in his simple yet recognizable white shirt and black vest combo.

Now, while he might not wield a sword like the other members of the Demon Slayer Corps, Kozo Kanamori plays a crucial behind-the-scenes role as a master blacksmith. He runs a modest forge, pouring his heart and soul into every blade he crafts or repairs. His dedication to his work is undeniable; Kozo Kanamori doesn’t just make weapons—he perfects them. Each sword that passes through his hands is treated with care, precision, and an almost sacred level of respect. It’s no surprise that the Demon Slayer Corps regularly turns to Kozo Kanamori for high-quality equipment essential in their battle against demons.

But beyond the hammer and anvil, there’s a lot more to Kozo Kanamori than meets the eye. Sure, he comes off as gruff and reserved at first glance, but those who know him—especially his family—see the warmth beneath the surface. Kozo Kanamori deeply cares for Genya and Sanemi, and his protective instincts shine through when it matters most. Even though he’s not trained in combat, Kozo Kanamori steps up during the final arc, contributing his skills to help develop new weapons aimed at defeating Muzan Kibutsuji. That kind of selflessness? That’s classic Kozo Kanamori.

When you look at Kozo Kanamori’s personality more closely, certain patterns start to emerge. For instance, many fans and analysts believe he fits the ISFJ personality type—Introverted, Sensing, Feeling, Judging. And honestly, it makes sense. Kozo Kanamori is detail-oriented, taking great care when inspecting damaged blades, which reflects strong Introverted-Sensing traits. He’s also empathetic, picking up on the emotional states of Tanjiro and Nezuko without them saying a word—something that aligns perfectly with the Feeling function. Plus, his loyalty to both his family and his craft shows a deep-rooted sense of duty, a hallmark of the Judging aspect. All of this paints a picture of someone dependable, hardworking, and quietly compassionate—just like Kozo Kanamori.

Then there’s the Enneagram angle. Based on his behavior and values, Kozo Kanamori seems to embody the qualities of a Type 9: The Peacemaker. He avoids conflict, values harmony, and generally prefers calm over chaos. Kozo Kanamori isn’t one to push his opinions onto others; instead, he listens, observes, and offers support when needed. He’s gentle, patient, and non-judgmental—traits that make him approachable despite his tough exterior. That said, he can be indecisive at times, often holding back from making big choices until pushed by circumstances. Still, his inner strength lies in his consistency and quiet resilience.

In the end, Kozo Kanamori might not have flashy moves or dramatic speeches, but his contributions are invaluable. Whether it’s forging life-saving weapons or standing by his family in their darkest hours, Kozo Kanamori proves that heroism isn’t always about fighting—it’s about showing up, doing your part, and caring deeply. And that’s exactly why fans hold Kozo Kanamori in such high regard within the world of Demon Slayer.