Toujou Basara is a high school student whose father has suddenly just remarried. His father then departs overseas leaving Basara with two new beautiful step-sisters. Little does he know, his new sisters, Mio and Maria are actually the new Demon Lord and a succubus!? Almost trapped into a life of servitude, Basara forms a reverse contract by accident and ends up becoming Mio's master! Hijinks ensue as Basara finds himself in one ecchi situation after another. However, Mio's life is in danger as she is pursued by demons and heroes!
You can now watch The Testament of Sister New Devil online on the following streaming providers in the United States.
| Title | Air Date | Duration | ||
|---|---|---|---|---|
| Season 1 | Episode 1 | The Day I Got a Little Sister | 2015-01-08 | 25 min |
| Season 1 | Episode 2 | First Contract Between Servant and Master | 2015-01-15 | 25 min |
| Season 1 | Episode 3 | Reunion and a Gap in Trust | 2015-01-22 | 25 min |
| Season 1 | Episode 4 | Until Sadness Reaches Zero | 2015-01-29 | 25 min |
| Season 1 | Episode 5 | A Little Sisters' Morning Demon Lording | 2015-02-05 | 25 min |
| Season 1 | Episode 6 | Bearing Growing Emotions | 2015-02-12 | 25 min |
| Season 1 | Episode 7 | The Depths of Love and Hatred | 2015-02-19 | 25 min |
| Season 1 | Episode 8 | Erotic Succubus Out of Control | 2015-02-26 | 25 min |
| Season 1 | Episode 9 | Merits and Demerits of Master and Servant | 2015-03-05 | 25 min |
| Season 1 | Episode 10 | Plaintive Betrayal | 2015-03-12 | 25 min |
| Season 1 | Episode 11 | Espionage... What Lies After | 2015-03-19 | 25 min |
| Season 1 | Episode 12 | For This Night, This Moment | 2015-03-26 | 25 min |
| Season 2 | Episode 1 | What I Can Do for You | 2015-10-10 | 25 min |
| Season 2 | Episode 2 | Suspicions Deepening Within Mysteries | 2015-10-17 | 25 min |
| Season 2 | Episode 3 | My Cherished Feelings for You | 2015-10-24 | 25 min |
| Season 2 | Episode 4 | Amidst Entwining Plots | 2015-10-31 | 25 min |
| Season 2 | Episode 5 | Amidst the Wind Blowing Through the Battlefield | 2015-11-07 | 25 min |
| Season 2 | Episode 6 | Between Reality and One's Own Truth | 2015-11-14 | 25 min |
| Season 2 | Episode 7 | Between Entwining Plots and Desires | 2015-11-21 | 25 min |
| Season 2 | Episode 8 | Those Contending for the Future | 2015-11-28 | 25 min |
| Season 2 | Episode 9 | Beyond the Endless Dream | 2015-12-05 | 25 min |
| Season 2 | Episode 10 | The Consequences of What Must Be Done | 2015-12-12 | 25 min |
| Season 2 | Episode 0 | Shinmai Maou no Testament Burst OVA | 2016-01-26 | 25 min |
