Suwa

スワ

He is a Corporal in the Imperial Japanese Army and a C-class vampire who has existed since before the Edo period.
He was infected sometime during the Azuchi-Momoyama period, when he was between 14 and 16 years old. Suwa has little recollection of his human life and selected his own name after becoming a vampire. He chose the name Suwa because his only remaining human memories involve playing near the Suwa shrine as a child. Suwa survived the chaotic era and must suppress his instincts by wearing a mask that conceals the scent of blood. He bears eleven stigmata on his body and is known as the vampire who hates vampires.