The Testament of Sister New Devil Episode 4 English Subbed Episode Title:When Sadness Reaches Zero.Episode Description:After wounding Basara, the stranger blames Mio for her allies for her cause. As Basara is being treated by Maria, Mio contemplates on surrendering herself and her inherited powers to the stranger to prevent her companions from harm. However, Yuki arrives to stop Mio and the stranger's departure and fight him. With the stranger overpowering Yuki, Basara and Maria arrive and defeats the villain using Basara's Banishing Shift technique. However, Basara is injured by the unknown man's demon, causing Mio to lose control of her powers. Basara recovers from his injuries and appeases Mio using his Banishing Shift. In the aftermath, Yuki provides Maria with a special medicine for Basara's recovery and expresses her joy for the latter for completely controlling his powers. At school, Basara exposes Yahiro as the stranger. Basara and Yahiro form a temporary truce as Basara holds the fact of reporting Yahiro's failure to his superiors as leverage and as act of trust from Yahiro's intention of not killing him and Maria. Yahiro then informs Basara that Zolgia killed Mio's parents. Meanwhile, Jin makes a call to an unknown recipient.