Natsuno's best friend. He has a slight crush on the nurse, Ritsuko.
He dies in episode 5 after being bitten by Shimizu Megumi and resurrects as a shiki. He is then forced to turn Natsuno into a shiki against both of their wills. When Natsuno comes back as a Shiki, Tooru begs for his forgiveness, and although he doesn't tell anyone about Natsuno, he remains at Sunako's side, doing everything to survive, even knowing that Natsuno is their enemy, slowly distancing himself from his best friend.
When Ritsuko also dies and becomes a Shiki, she refuses to drink blood, and Tatsumi kidnaps her co-worker Yasuyo and throws her in Ritsuko's cell, while Tooru is forced to witness and make sure Ritsuko attack Yasuyo. When the Shiki extermination breaks out, Ritsuko begs Tooru to release Yasuyo, and after much internal struggles, Tooru eventually complies. Afterwards they stay together in the cell, and gets staked by the villagers when they are asleep, next to each other.
