is one of the main servants to the Kirishiki family, Tatsumi is a special kind of vampire called the "jinrou", who can withstand the sunlight unlike other Shikis and cannot be easily killed. He is a sadistic individual and enjoys tormenting his victims. He also acts as the commander of the Shiki-turned villagers. He has a great respect for Sunako.
Spoiler!During the final episodes, Tatsumi fights with Natsuno. They fall down a hole where the remains of dead shiki were thrown. Natsuno takes out a bomb and lights it up. Both Tatsumi and Natsuno die during the explosion.