Every season of UNDER NINJA ever, ranked from best to worst by thousands of votes from fans of the show. The best seasons of UNDER NINJA!

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.

Throw a Rock, Hit a Ninja

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.

I Want to Be a Ninja

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.

Boobs: So Close, Yet So Far

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.

Do You Know What the Ninja Code Says?

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.

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

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.

The Lid on This Hellish Cauldron Has Come Off

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.

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

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.

Every Last Ninja on the Surface Will Be Annihilated

Ranran finishes her analysis of the UN's invisibility suit and sends her findings to Kato. Saruta begins his attack on the school and starts cutting down the students and faculty.

I'm Gonna Go Down in Shinobi History

A Maiden's Chest Is a Precious Thing

Hibi loses his fight to Yamada and now it's time for Kuro to step up to the plate. Noguchi encounters Sato and Suzuki while following orders from the Director and he leads them into a secret underground facility formerly run by the Japanese army.

Kuro Finally Took Up a Sword

The battles at the schools reach their climax. When all is said and done who will be left standing and what will be the outcome?

Business as Usual, Wrapped Up Tidy

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

The Best Seasons of UNDER NINJA

The Best Seasons of UNDER NINJA

Season 1