Suwa is a vampire featured in the mini-anime series "Code Zero Daily Report." He operates as a veteran member of the Imperial Army's Code Zero unit, a specialized squad handling vampire-related threats. His existence stretches back to the Edo period, marking centuries of undeath. Suwa works alongside unit members Kurusu, Takeuchi, and Yamagami, carrying out investigative and counter-operations against vampiric activities under the command of Lieutenant General Nakajima. As a vampire, he possesses inherent traits of his kind. His appearance is consistently distinguished by a mask. The mini-anime depicts his activities within Code Zero, with no extensive backstory, personal narrative, character development, or evolution explored in official media beyond these episodes. Information on his origins prior to the Edo reference, specific motivations, interpersonal dynamics beyond operational duties, or significant narrative arcs remains unavailable.