A Ninja and an Assassin Under One Roof: Season 1, Episode 1 - A Ninja and an Assassin Meet (2025)

The episode opens with Kusagakure Satoko, a teenage ninja-in-training, performing acrobatic flips and kicks as she attempts to complete a mission. She appears exhausted and hungry, eventually collapsing in an alleyway, seemingly lifeless. Koga Konoha, a high school girl and professional assassin, discovers Satoko lying there and initially mistakes her for a dead body. Konoha kicks Satoko in the gut to check if she is alive, revealing Satoko is merely weak and famished.

Konoha brings Satoko back to her apartment, where she coldly withholds food from her, eating it herself while Satoko watches. Konoha expects Satoko to keep house and follow her strict rules, showing a sharp contrast between Konoha's cold, efficient assassin demeanor and Satoko's naive, clumsy ninja personality.

Satoko tries to prove her usefulness by demonstrating her unique ninja skill: turning dead bodies and inanimate objects into leaves. This ability is shown when Satoko disposes of a corpse by transforming it into leaves, a technique that Konoha finds both useful and amusing. Despite this, Satoko is largely inept at traditional ninja skills and is relegated to menial tasks.

Konoha sends Satoko alone to dispose of a corpse she killed earlier. While doing so, Satoko is ambushed by Hatsuko, a ninja assassin who demands Satoko revive the other ninjas she had turned into leaves. Konoha arrives just in time to rescue Satoko, killing Hatsuko with a swift, silent stabbing. Konoha then burns the leaves Satoko created to cook sweet potatoes, showing a rare moment of domestic normalcy.

Satoko, feeling unsatisfied with her relationship with Konoha, seeks advice from Kuro, a local man who frequents pachinko parlors instead of working. Kuro believes Satoko wants to become a couple with Konoha and gives her tips on how to get Konoha's attention.

Satoko's frustration culminates in her turning all of Konoha's furniture into leaves, an act of rebellion that leads to her being kicked out of Konoha's apartment. She moves in with Kuro and Yuriko, where she discovers Kuro's secret pastime of gambling at pachinko parlors.

Suddenly, they are attacked by Ayaka, another ninja who is jealous and attempts to kill Yuriko. Satoko dives in front of Yuriko to protect her, but Konoha arrives and kills Ayaka to defend Satoko. Kuro reveals that Ayaka was a rogue ninja, confirming the danger Satoko faces from her former village.

The episode ends with Satoko returning home with Konoha, unaware that they are being watched by another mysterious girl, setting up future conflicts and intrigue.

The ending of "A Ninja and an Assassin Under One Roof," Season 1, Episode 1, titled "A Ninja and an Assassin Meet," shows Konoha, the cold and skilled assassin, saving Satoko, the runaway ninja, from multiple deadly attacks by other ninja assassins. After defeating these pursuers, Konoha and Satoko begin living together, setting the stage for their unusual household. The episode closes with a bizarre twist where Konoha is transformed into a literal baby, leaving Satoko to care for her while another character, Marin, is mysteriously kidnapped.

Expanding on the ending scene by scene:

The episode's climax unfolds after Satoko, a desperate and exhausted ninja who has fled her village, collapses in a city alley and is found by Konoha, a high school girl who is secretly a professional assassin. They share a brief moment of peace and a meal, hinting at a fragile bond forming between them. This calm is shattered when Fumiko, a deadly ninja from Satoko's former clan, arrives to eliminate her. Konoha swiftly kills Fumiko, revealing her lethal skills and her identity as an assassin. Shortly after, another ninja assassin named Miu attacks, but Konoha again dispatches her with ease.

Following these violent confrontations, the focus shifts to the complex relationship between Satoko and Konoha. It is revealed that Satoko's older sister, Minado, was responsible for killing their parents, adding a layer of family trauma and emotional tension to the story. This revelation is abruptly interrupted by an unexpected event: a mysterious delivery of apple juice that Konoha drinks. This seemingly innocuous act triggers a magical or supernatural transformation, turning Konoha into a literal baby, complete with diapers. Satoko and another character, Marin, are then left to deal with the consequences of this transformation, including buying baby supplies for infant Konoha.

The episode ends on a cliffhanger when Marin, who was out buying pacifiers, suddenly disappears, kidnapped under mysterious circumstances. This leaves Satoko alone to care for baby Konoha, setting up a new dynamic and conflict for the story to explore.

At the end of the episode, the fates of the main characters are as follows:

• Konoha: Transformed into a baby, dependent on Satoko for care, her usual assassin prowess temporarily nullified.
• Satoko: Now responsible for caring for baby Konoha and facing the challenge of rescuing Marin, who has been kidnapped.
• Marin: Kidnapped and missing, her fate uncertain but critical to the unfolding plot.

This ending combines action, dark comedy, and supernatural elements, emphasizing the unusual and complex relationship between the ninja and the assassin, while introducing new conflicts and mysteries to be resolved in subsequent episodes.

The first episode of "A Ninja and an Assassin Under One Roof," titled "A Ninja and an Assassin Meet," does not have a post-credit scene. A user comment specifically expressed disappointment about the lack of an after-credits scene in episode 4, implying that earlier episodes, including episode 1, also did not feature one. None of the other sources mention any post-credit scene for episode 1.

Therefore, based on available information, episode 1 does not include a post-credit scene.

Konoha, the assassin, fights using clawed chain weapons and is skilled in combat and assassination techniques. Satoko, the ninja in training, demonstrates acrobatic ninja moves such as flips and kicks but is less skilled and more clumsy compared to Konoha. Their fighting styles contrast with Konoha's cold, efficient assassin approach and Satoko's more naive ninja training.

In episode 1, Konoha rescues the nearly starving and exhausted Satoko from pursuers. Despite Konoha's cold and somewhat harsh demeanor--such as withholding food and expecting Satoko to keep house--Satoko moves in with Konoha, and they begin living together. The episode establishes their dynamic as a cold, experienced assassin paired with a clumsy, naive ninja, setting the stage for their unusual household relationship.

Satoko is pursued by other ninjas from her village who want to capture her as a runaway. One of these pursuers is Ayaka, a rogue ninja who attacks Satoko and her new companions out of jealousy. Ayaka attempts to kill Yuriko, a friend of Kuro and Satoko, but is killed by Konoha while protecting Satoko. This reveals that some ninjas from Satoko's village are rogue and hostile, adding complexity to the conflict.

Kuro is a friend of Satoko and Yuriko who provides advice to Satoko about her relationship with Konoha. She reveals that Ayaka, the attacking ninja, was a rogue ninja. Kuro is also shown to have a somewhat carefree attitude, as she has been going to pachinko parlors instead of looking for work. Kuro's role is that of a supporting character who adds insight into the ninja world and Satoko's social circle.

After moving in with Konoha, Satoko causes trouble by turning all of Konoha's furniture into leaves, which leads to her being kicked out temporarily. She then moves in with Kuro and Yuriko, where they are attacked by Ayaka, a jealous rogue ninja. Konoha rescues Satoko by killing Ayaka. Later, Satoko returns to live with Konoha, and they are watched by another mysterious girl, hinting at further developments.

The TV show "A Ninja and an Assassin Under One Roof," season 1 episode 1, is not specifically categorized as family-friendly. It is a shōnen anime with themes involving ninjas, assassins, and some violence related to their conflicts and missions.

Potentially objectionable or upsetting aspects for children or sensitive viewers include:

• Violence and combat scenes: The show features fights between ninjas and assassins, including the use of weapons and ninja magic, which may be intense or graphic for younger audiences.
• Themes of assassination and death: The main characters are involved in assassination and evading pursuers, which involves mature themes of killing and danger.
• Dark or suspenseful tone: The presence of pursuers hunting deserters and the plotting of revenge by deceased ninjas in the afterlife suggest some dark or suspenseful elements.
• Mature character situations: The cohabitation of two young women with dangerous backgrounds may include moments of tension or implied violence.

There is no indication of explicit sexual content or strong language in the first episode, but the violent and mature themes suggest it is more suitable for teens and older viewers rather than young children or very sensitive audiences. Parents should consider these factors before allowing children to watch.