Takeo is a minor character of the manga and anime series Akuma no Riddle. He was a former acquaintance of Suzu Shutou. She was very fond of him and they grew up together. Ultimately, due to her non-aging body, Takeo took another woman as his wife and is shown to have passed on by the time events of the main story occur. His grave is featured in the ending sequences of the manga and anime.