Tetsushi (meaning "iron will/resolve", goes by Tetsu) is an 18-year-old, black-haired boy with glasses. He met Yuki and Jun two years ago and gives them a place to stay. He is Yuki's best friend. He is tormented by his love for Yuki and being powerless to help him, especially after finding out about Yuki's past.Tetsu grew up in the same orphanage as Ryouji and Riko. The environment of the orphanage is strict and he attempts to run away at age 12, though Ryouji convinces him to go back. At 16 he leaves the orphanage and stays with Ryouji and Riko, who see Tetsu as a sibling. He sneaked into Seidokai with Yuki.