Basara Toujou is the main character from the light novel and anime series The Testament of Sister New Devil. He is a high school student who becomes involved in a supernatural conflict when he discovers that his new step-sisters, Mio Naruse and Maria Naruse, are actually demons. Basara possesses unique abilities as a Hero, which allows him to combat various threats in the series. He is known for his strong sense of responsibility and protective nature towards his sisters, often putting their safety above his own. His character development revolves around balancing his normal life with the challenges posed by the supernatural world.