Under Ninja

Once believed to be extinct, ninjas have reappeared in contemporary Japan following the Pacific War. With a headcount rumored to be two hundred thousand, these deadly assassins are now tasked with covert operations, infiltrating a significant portion of the nation's public and private institutions in the process.

Among these ninjas is Kurou Kumogakure, who often spends his days in a run-down apartment with no motivation to do much of anything. Some might consider him a useless vagrant who does nothing but steal beer from his neighbor. Nevertheless, the 17-year-old loser might actually be more dangerous than his demeanor suggests. Kurou's hidden potential is put to the test when he is given a new mission to infiltrate a local high school, but there is more to this assignment than he could ever predict.

[Written by MAL Rewrite]

Kumogakure, Kurou Main

Ban, Taito Japanese

Russian Foreigner Supporting

Shinomiya, Gou Japanese

Kawado, Ai Supporting

Anzai, Chika Japanese

Katou Supporting

Shingaki, Tarusuke Japanese

Yamada, Mitsuki Supporting

Uchida, Aya Japanese

Hachiya, Shion Supporting

Yamashita, Daiki Japanese

Suzuki Supporting

Tanezaki, Atsumi Japanese

Sasama Supporting

Sonozaki, Mie Japanese

Yoshida, Akikazu Supporting

Ogino, Seirou Japanese

Junna's Father Supporting

Oowada, Tomoyuki Producer

Cao, Cong Producer

Shioya, Yoshiyuki Producer

Kurosu, Nobuhiko Producer

Reviews

Oct 18, 2024

glhfbruno

Recommended

Really funny, Really gruesome, REALLY UNIQUE but a masterpiece at that

Has alot of dark and deadpan/weird humor

Enjoyed everything except the ending has a cliffhanger...

Its a Mind twisting end, i will leave it at that

Good for a teen friends group for late night shows

... -


I liked it alot 9/10 for sure
Just dont like the cliffhanger

Art style is Good and fits greatly

Character development, Really good - And alot of surprises Main character seeming to be a genious in secret like ayonakonji-kun

Panic was about realistic

Others will for sure enjoy this if they like dark humor and gruesome scenes (K16)

Reviewer’s Rating: 9

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May 29, 2025

LegionIscariot

Mixed Feelings

The characters are interesting.
The fight choreography is good.
The art style looks nice.
Overall the anime is entertaining.

But although the story is interesting, I had a hard time following what was going on.
For starters there are some strange time jumps that dont help at all.
I lost track of who's who. I lost track of who's on who's side.

There are two organizations of ninjas that were formed after a great war. NIN (National Intelligence of Ninja), and UN (Under Ninja).
...
The anime's biggest flaw is how the story is told.

The violence is graphic with blood, dismemberments, and decapitations.

Reviewer’s Rating: 6

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Jan 2, 2024

ShonerSul

Not Recommended

Summary: Unnecessary back and forth in timeline, boring family-name jokes, sexual contents in unpleasing way, a total mess.

I don't even need to talk about Japanese victim mentality on their forced pacifism (If you want to know in detail, refer to "Article 9 of the Japanese Constitution" in wiki.) to classify this animation as a bad one. I have not read the original comics, so I'm not sure if all the wrongs are made by origin or by animation.

It goes back and forth in timeline very often, and some scene changes happen in unexpected timing. If used properly that kind of twists may bring an extra ... impression, but in this show they were very inhospitable and did not bring any positive impact.

To illustrate personality of characters it uses a lot of naughty talks, such as Kurou's family-name jokes and Sasama's breast milk jokes. And for fan service it contains many sexual contents, but none of them are in a good way. I don't know if someone likes them, but not for me.

Hard to find a character that audiences can sympathize with, especially Saruta who slaughtered hundreds of civilians. Perhaps the author just wants to show how evil UN is.

Reviewer’s Rating: 4

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Fall 2023 Simulcast List [Update 10/22]

In this thread, you'll find a comprehensive list of television anime acquired for simulcast release during the Fall 2023 season. Anime series licensed for home ...read more

Sep 29, 2023 8:06 AM by Snow | Discuss (26 comments)

Fall 2023 Preview

In this thread, you'll find a comprehensive list of Fall 2023 titles with an accompanying promotional video, commercial, teaser, or trailer. This post will be u...read more

Sep 22, 2023 10:51 AM by Snow | Discuss (13 comments)

	Poll: Under Ninja Episode 12 Discussion ( 1 2 3 ) Stark700 - Dec 21, 2023	126 replies	by mudaddict »» Nov 14, 2025 5:54 PM
	Poll: Under Ninja Episode 11 Discussion Stark700 - Dec 14, 2023	22 replies	by Kap92 »» Jan 5, 2025 10:06 AM
	Poll: Under Ninja Episode 10 Discussion Stark700 - Dec 7, 2023	21 replies	by Kap92 »» Jan 5, 2025 10:05 AM
	Poll: Under Ninja Episode 9 Discussion Stark700 - Nov 30, 2023	26 replies	by Kap92 »» Jan 5, 2025 10:05 AM
	Poll: Under Ninja Episode 8 Discussion Stark700 - Nov 23, 2023	30 replies	by Kap92 »» Jan 5, 2025 10:05 AM