Sajin Komamura, the former captain of the 7th Division in the Gotei 13, underwent a significant transformation. He sacrificed his human form to gain immense power through a technique known as the Humanification Technique, which turned him into a werewolf-like creature. Eventually, he lost his anthropomorphic form and became a giant wolf as a result of using his bankai’s full power, which consumed his heart. Later, he chose to live in seclusion with his clan, the Great Dog Clan, in the Beast Realm.
In the Bleach series, Sajin Komamura is a character who experiences a profound character arc, marked by loyalty, honor, and sacrifice. Initially introduced as a humanoid with a canine-like appearance, Komamura is a noble and strong warrior who values friendship and duty. His loyalty to his friends and the Soul Society is unwavering, and he is respected by his peers for his integrity.
Komamura’s transformation begins during the Thousand-Year Blood War arc when he decides to use the Humanification Technique to avenge his friend, Captain-Commander Yamamoto. This technique, passed down through his clan, temporarily gives him a human form and greatly enhances his strength. However, the power comes at a great cost, as it is fueled by the user’s life force.
After using this power, Komamura activates his bankai, Kokujō Tengen Myō’ō, which manifests as a giant armored warrior. In a desperate attempt to defeat his enemy, he unleashes the Dangai Jōe, a form of his bankai that requires the user to sacrifice their own heart, granting immense power but at the irreversible cost of their humanity.
Following the battle, Komamura’s transformation into a wolf is complete, and he is no longer able to maintain his humanoid form. Accepting his fate, he decides to leave the Gotei 13 and return to his ancestral home in the Beast Realm. There, he takes on the role of a guardian, watching over his clan and living out his days in peace, away from the conflicts of the Soul Society. His story is one of selflessness and the enduring spirit of a warrior who gave everything for the sake of others.