16TBS6.9(30)

UNDER NINJA

Name: UNDER NINJA
Director: Satoshi Kuwabara
Genre: Animation, Drama, Comedy, Action & Adventure
Released: 2023-10-06
Rating: 6.9

アンダーニンジャ

AnimationDramaComedyAction & Adventure

Watch Free

We checked 8 streaming services in India on 04 Jun 2026 at 07:33 IST

2023

1 Season

12 Episodes

Ended

About

Thousands of ninjas live in secret across Japan. One underachieving ninja spends his days doing nothing — until he receives a special mission.

#japan#slice of life#ninja#based on manga#seinen#anime

Cast

Taito Ban

as Kuro Kumogakure (voice)

Atsumi Tanezaki

as Suzuki (voice)

Tarusuke Shingaki

as Kato (voice)

Tasuku Hatanaka

as Miracle Hibi (voice)

Kouichi Souma

as Ozu (voice)

Chika Anzai

as Kawado (voice)

Cho

as Oono (voice)

Seasons

Season 1

12 episodes2023

Episodes

Season 1

See all 12episodes →

Throw a Rock, Hit a Ninja

Oct 6, 202324m2.5

Kumogakure Kuro is a modern day ninja, but that doesn't mean his life is exciting. Bereft of any missions for a long time, he's an underachiever whiling away his days in obscurity, until he receives a special delivery.

I Want to Be a Ninja

Oct 13, 202324m

Kuro's been assigned a mission to infiltrate Kodan High School, but while waiting for his enrollment to finish, he's tasked with confronting a mysterious assailant with a very particular target.

Boobs: So Close, Yet So Far

Oct 20, 202324m

Kuro sets a trap and catches a high school boy named Eita. Upon returning home Eita encounters Junna who wants to borrow his drone. Eita agrees to let her if she can find the blond foreigner.

Do You Know What the Ninja Code Says?

Oct 27, 202324m

The confrontation between the Foreigner, Suzuki and Hibi continues. Junna's stepfather arrives at the location of the conflict and begins to yell at her for being outside. Then the Foreigner attacks him.

Kumogakure Is Within the Top 10 Common Family Names in Japan (Lying)

Nov 3, 202324m

Kuro goes to take his placement tests for school where he meets Noguchi who is there for extra lessons. After the tests Kuro and Noguchi walk home together and Kuro introduces her to Kawado.

The Lid on This Hellish Cauldron Has Come Off

Nov 10, 202324m

After coming to Eita's aid in a conflict with some school delinquents, Kuro makes his way to the school's boiler room where he confronts the director. Later on the defeated Noheji requests Kuro's aid in fighting some students from Yankii High.

Meow Meow, Meow Meow, Meow Meow Meow Meow Meow?

Nov 17, 202324m

After the lady at the convenience store is attacked by an invisible individual and killed, an Emergency Shinobi Notice is sent out and an investigation is launched in an effort to ascertain the identity of the culprit.

Every Last Ninja on the Surface Will Be Annihilated

Nov 24, 202324m

Kuro scares Noguchi after sneaking into her room to tell her not to go to school. Yoshida recounts his history of being a writer and how it was influenced by various ninja.

Where does UNDER NINJA rank today?

UNDER NINJA is #1743 on the CineFlixo Daily Streaming Charts today.

Highest: #1743
Top 10: 0 days
Top 100: 0 days

Watch UNDER NINJA Online Free — All Episodes in HD

Stream UNDER NINJA online free in HD on CineFlixo. A popular animation, drama, comedy, and action & adventure series originally produced in Japonés and released in 2023, it's earned a solid 6.9/10 from 30 viewers worldwide.

About UNDER NINJA

Thousands of ninjas live in secret across Japan. One underachieving ninja spends his days doing nothing — until he receives a special mission. Across 1 season and 12 episodes, originally airing on TBS.

UNDER NINJA Cast and Characters

The cast features Taito Ban (as Kuro Kumogakure (voice)), Atsumi Tanezaki (as Suzuki (voice)), Tarusuke Shingaki (as Kato (voice)), Tasuku Hatanaka (as Miracle Hibi (voice)), and Kouichi Souma (as Ozu (voice)). Their performances are a major reason UNDER NINJA has built such a passionate audience.

Where to Watch UNDER NINJA Online

On CineFlixo you can watch UNDER NINJA free — no account, no credit card, no ads in the middle of the show. We stream the full series in 720p / 1080p HD, with subtitles when available, on any device: phone, tablet, laptop, or smart TV browser.

▶ Watch UNDER NINJA Now

Why People Are Watching UNDER NINJA

UNDER NINJA flies under the radar but it deserves your attention. What makes it work is emotional weight that hits where it counts, sharp comedic timing that lands consistently, and action sequences that don't feel cheap. If you enjoy Japonés storytelling that doesn't follow the same tired beats, this is the kind of show you'll end up recommending to friends.

Frequently Asked Questions about UNDER NINJA

Where can I watch UNDER NINJA online for free?

You can watch UNDER NINJA online free on CineFlixo. Just open the page and hit play — no signup, no subscription, full HD streaming on phone, tablet, or desktop.

How many episodes does UNDER NINJA have?

UNDER NINJA has 12 episodes across 1 season. All episodes are available to stream right here on CineFlixo.

Is UNDER NINJA good? What's the rating?

UNDER NINJA holds a 6.9/10 rating based on 30 reviews — a solid pick if the genre interests you.

Who is in the cast of UNDER NINJA?

The main cast includes Taito Ban, Atsumi Tanezaki, Tarusuke Shingaki, and Tasuku Hatanaka, plus a strong supporting ensemble.

Is UNDER NINJA available in Japonés?

Yes — UNDER NINJA was originally produced in Japonés and that's the version you'll stream here on CineFlixo. English subtitles are provided when available.

When was UNDER NINJA released?

UNDER NINJA first aired in 2023.

Do I need an account to watch UNDER NINJA on CineFlixo?

No. CineFlixo is free and you can watch UNDER NINJA without creating an account. Sign-up is optional — only useful if you want a personal Watchlist or to comment on episodes.

Similar Series You Might Like

If you enjoyed UNDER NINJA, check out Silver Fang: The Shooting Star Gin, The Maid I Hired Recently Is Mysterious, Kakafukaka, The Brave of Legend Da-Garn, and Gosho Aoyama's Collection of Short Stories.

Frequently Asked Questions

Where can I watch UNDER NINJA for free?

You can watch UNDER NINJA online for free on CineFlixo. All 12 episodes across 1 season are available to stream in HD without a subscription, signup, or paywall. Just open the show page and press play.

How many seasons and episodes does UNDER NINJA have?

UNDER NINJA currently has 1 season and a total of 12 episodes. The series status is "Ended", so the episode count may grow as new seasons are released. You can browse the full episode list on CineFlixo and continue watching from where you left off.

What is UNDER NINJA about?

Thousands of ninjas live in secret across Japan. One underachieving ninja spends his days doing nothing — until he receives a special mission. It belongs to the Animation, Drama, Comedy, Action & Adventure genres.

In which language is UNDER NINJA originally available?

UNDER NINJA was originally produced in JA. On CineFlixo the show is available in its original JA audio. Check the player options on the watch page for available subtitle tracks.

When was UNDER NINJA first released?

UNDER NINJA first premiered on October 6, 2023 (2023). The series has since concluded its run.