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Description
Hōzō Tamai is a minor but narratively significant character in the story, serving as a corporal in the 7th Division of the Imperial Japanese Army. His full name is revealed in supplementary materials, identifying him as Tamai Hōzō. Within the 7th Division, he holds the rank of corporal, placing him in a position of authority over lower-ranking soldiers, including Superior Private Hyakunosuke Ogata.

Tamai is portrayed as an experienced and capable soldier, noted for his skills as a mountaineer. His personality appears pragmatic and perceptive, particularly in his assessment of other soldiers. Unlike some of his comrades who are quick to dismiss or belittle Ogata due to his aloof nature and illegitimate status, Tamai demonstrates a genuine respect for Ogata's abilities. He is shown to value Ogata's judgment as a soldier, recognizing that Ogata would not act without reason and that his actions often carry a calculated purpose. This perceptiveness is also evident when he correctly interprets the meaning behind a cryptic message left by an injured Ogata, understanding it as a vital clue rather than an empty boast.

A key aspect of Tamai's motivation and role in the story is his involvement in a conspiracy against his superior officer, Lieutenant Tsurumi. Along with fellow soldiers Noma and Okada, Tamai is part of a faction within the 7th Division that secretly plans to rebel. Their goal is to seize the stolen Ainu gold for themselves, preventing Tsurumi from using it to establish a military dictatorship in Hokkaido. In this endeavor, Tamai appears to be a leading figure, and he values Ogata as an ally in this plot, trusting his skills and listening to his counsel, such as when Ogata advises him to keep their plans hidden from another soldier, Tanigaki Genjirō.

Tamai's relationships with other characters are defined by this conspiracy and his role in the 7th Division. His connection to Ogata is the most developed. While Ogata is often an outsider within the division, Tamai is one of the few who appreciates him, creating a bond based on mutual professional respect rather than personal friendship. This is contrasted with his relationship with soldiers like Noma, who is less tolerant of Ogata. Tamai also interacts with the protagonist, Saichi Sugimoto, though not directly as an ally. After Ogata is severely wounded in a confrontation with Sugimoto, Tamai leads a search party, including Noma and Okada, to find the attacker. Using his tracking skills, Tamai successfully identifies Sugimoto as the culprit. However, before he can act on this information, he and his men fall into a trap and are subsequently mauled to death by a bear, an event that significantly impacts later developments.

In terms of abilities, Tamai is a proficient soldier. He is an experienced mountaineer, skilled in tracking, and a capable combatant, equipped with standard-issue weaponry of the era, including an Arisaka Type 30 rifle and a Type 26 revolver. His ultimate fate serves as a catalyst for other characters, particularly Ogata, who later seeks revenge against Tanigaki, mistakenly believing him to be responsible for the deaths of Tamai and his comrades.