Helck
Three months have passed since the Demon Lord was struck down, and the Demon Realm is holding a tournament to select his replacement. The leading contestant is Helck, a human hero …
Open full watch pageCinento therapy read
The Testament of Sister New Devil (2015)
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!
Cinento therapy read
The Testament of Sister New Devil works because it combines Big-idea, immersive, futuristic. Best for a reset, low-friction watch, and a mood lift. The audience signal is solid enough to trust the ride.
Mood fit
Best for a reset, low-friction watch, and a mood lift.
Who it is for
Great for shared viewing, lighter nights, and cross-generation picks.
Tone
Big-idea, immersive, futuristic
Pacing
Fast to medium-fast with regular spikes.
Why Cinento recommends it
Cinento recommends The Testament of Sister New Devil because it scores well for Best for a reset, low-friction watch, and a mood lift. It also balances Big-idea, immersive, futuristic.
Watch Online
Open full watch pageWith the first two clicks on play or anywhere on the screen, two ad windows may open from the external player source. Close them quickly and return here to keep watching.
Trailer
If You Liked This…
Campione!
Godo Kusanagi, a high school student that kills a god, claiming its power and title of Campione, to slay other gods.…
Open full watch page
The "Hentai" Prince and the Stony Cat
Yōto Yokodera is a schoolboy who is unable to express his true feelings freely. After hearing about the wish-granting Stony Cat, he decides to try and make an offering to lose his …
Open full watch page
The Familiar of Zero
Louise Françoise Le Blanc de La Vallière’s name is so long and her spell-casting skills are so poor that everyone at the Tristain Academy of Magic just calls her “Louise the Zero.”…
Open full watch page
The Foolish Angel Dances with the Devil
Determined to protect his demon world from heavenly angels, demon Masatora Akutsu heads to earth in search of a charismatic human to rally his kin. Masquerading as a high schooler …
Open full watch page
The Demon Sword Master of Excalibur Academy
Awakening from magical stasis after a thousand years, the Dark Lord Leonis suddenly finds himself in the body of a ten-year-old boy! He quickly meets Riselia, a girl confronting th…
Open full watch page
I'm Quitting Heroing
After saving humanity from the despicable Demon King, Leo Demonhart does not earn a hero’s standing. Instead, he is regarded with suspicion and hostility by those he fought to prot…
Open full watch page
Rave Master
Fifty years ago, malevolent stones known as Dark Brings brought about the "Overdrive," a calamitous event that destroyed one-tenth of the world. In the present day, the nefarious o…
Open full watch pageRelated guides
FAQ
Where can I watch The Testament of Sister New Devil online?
Use the player and provider boxes on this page. Availability varies by region, so Cinento surfaces provider data plus a direct watch page when available.
Who should watch The Testament of Sister New Devil?
Great for shared viewing, lighter nights, and cross-generation picks.
What kind of tone does The Testament of Sister New Devil have?
Big-idea, immersive, futuristic Fast to medium-fast with regular spikes.