After Toujou Basara's father remarries, Toujou gains two step-sisters named M...
The Testament of Sister New Devil
Season 1 Episode 4: Kanashimi ga zero ni naru made
Basara suffers a deep wound in the battle against the white-masked man after Mio's power. Mio regrets getting Basara involved, and challenges the white-masked man to battle on her own. Meanwhile, in order to protect Mio, Basara resolves to use the "forbbiden art" he sealed away aft...