Complete Guide to Spring 2025’s Must-Watch Anime: A Ninja and an Assassin Under One Roof

1. Introduction

Here’s the bottom line: Premiering in April 2025, A Ninja and an Assassin Under One Roof is already turning heads with its one-of-a-kind premise—a ninja and a professional assassin sharing a home.

With Shaft’s signature stylish animation and an all-star voice cast, this series is shaping up to be one of the season’s standout hits.

What makes it even more intriguing is the contrast between the dark pasts of the characters and the unexpectedly heartwarming daily life they end up sharing.

Blending action, comedy, and buddy drama in just the right proportions, it’s a show for anime veterans and newcomers alike.

What you’ll learn in this article:

TV and streaming schedules
Story overview and character breakdowns
Information about the original manga
Reactions from social media and official trailers
Highlights and what makes this anime special

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2. Where to Watch

📺 TV Broadcast Schedule in Japan

Broadcaster	Start Date	Time Slot	Notes
TOKYO MX	April 10, 2025	Every Thursday at 22:30 JST	—
Kantele (Kansai TV)	April 10, 2025	Every Thursday at 25:45 JST	(equivalent to 1:45 AM Friday)
BS11	April 10, 2025	Every Thursday at 24:30 JST	(equivalent to 12:30 AM Friday)
AT-X	April 10, 2025	Every Thursday at 21:30 JST	Repeats: Mon 9:30 / Wed 15:30
Mie TV	April 16, 2025	Every Wednesday at 24:20 JST	(equivalent to 12:20 AM Thursday)

🌐 Streaming Information (Japan Only)

✅ Early Streaming

Platform	Start Date	Schedule	Notes
dAnime Store	April 10, 2025	Every Thursday at 22:00 JST	Earliest and exclusive pre-release streaming

📅 General Streaming (Post-Broadcast)

Platform	Start Date	Notes
All other platforms	April 13, 2025 (Sunday) at 22:00 JST	Available sequentially – check individual services

🆓 Unlimited Streaming Services (Subscription-Based)

Platform	Notes
U-NEXT	Popular all-in-one streaming service in Japan
ABEMA	Offers simulcast & archives
Anime Hodai	Anime-focused subscription service
niconico	Includes Live and Channel streaming
DMM TV	Large variety of anime and dramas
Lemino	NTT Docomo’s streaming platform
FOD	Fuji TV On Demand
Bandai Channel	Focuses on Bandai-related anime
Hulu Japan	Japanese version, separate from global Hulu
TELASA	Subscription plan supported
J:COM STREAM	Available for J:COM subscribers
milplus	Telecom-based streaming service
Prime Video	Amazon Japan region only
Kantele Douga	Kansai TV’s official VOD service
TVer	Free catch-up streaming platform in Japan

💰 Pay-Per-View Streaming Services (Rental / Purchase)

Platform	Notes
HAPPY!動画	Pay-per-view video service in Japan
Rakuten TV	Offers both rental and digital purchase

⚠️ Notes for Viewers in Japan

Broadcast and streaming times are in Japan Standard Time (JST). Be mindful of day changes for late-night slots.
Schedules are subject to change without notice, especially for regional or satellite channels.
dAnime Store will have the earliest access, ahead of TV broadcasts.
Subtitles are typically not provided for Japanese platforms unless specified. Most platforms stream in Japanese audio only.
To access many of these services, you may need a Japanese IP address or payment method.

3. Trailer & Early Reactions

Teaser PV:

Watch it now on the official website. Though only 30 seconds long, the teaser has already drawn praise for capturing Satoko’s adorable energy and Konoha’s cool demeanor.

What fans are saying:

Anime Evaluation – A Ninja and an Assassin Under One Roof

Category	Score	Reason
Story	8/10	A unique blend of action and slice-of-life. The setup (ninja × assassin cohabitation) is fresh, and the pacing is tight without being rushed.
Characters	9/10	Dynamic chemistry between the leads. Satoko’s innocence vs. Konoha’s deadpan makes every interaction memorable.
Animation	8/10	Shaft delivers crisp, expressive visuals. Creative camera work and expressive facial animation enhance comedic timing.
Music	7/10	BGM complements both action and daily scenes well. While not groundbreaking, it fits the tone effectively.
World-Building	7/10	The contrast between the ninja world and modern Japan is charming, though more lore could enhance immersion.
Comedy	9/10	The show excels at balancing absurd situations with witty banter. Strong comedic timing makes every episode engaging.

“The characters are so charming!” “The premise is hilarious!” “Shaft’s visual style is perfect for this!”
Manga fans are eager: “Can’t wait to see how far the anime will go.” “Will they keep the original’s pacing?”

Staff Comments:

Director Miyamoto Yukihiro: “We aim to depict the blend of daily life and high-stakes tension with good rhythm.”
Head writer Tomiyako Azuma: “We’ve taken care to preserve the unique dialogue and chemistry between characters from the manga.”

4. Anime Overview

Title: A Ninja and an Assassin Under One Roof
Air Date: April 10, 2025 (Thursday)
Studio: Shaft
Director: Yukihiro Miyamoto
Series Composition: Tomiyako Azuma
Character Design: Kazuya Ushidzuki
Music: Ryunosuke Kasai
Genres: Action, Comedy, Slice of Life

Official website and official Twitter(X)

5. Story (Spoiler-Free)

Satoko Kusagakure, raised in a secretive ninja village, escapes to the modern world seeking freedom. However, unfamiliar with the outside world, she quickly collapses from hunger.

She’s rescued by Konoha Kōga—a seemingly normal high school girl who turns out to be a deadly professional assassin.

So begins an unexpected cohabitation between two elite warriors from opposite worlds. With thrilling tension hidden in everyday life,

and a growing bond built through laughter and awkward encounters, this “out-of-the-ordinary meets slice-of-life” story is both heartwarming and unpredictable.

6. Main Characters

Satoko Kusagakure (Voiced by: Kazuki Mikawa)

Personality & Background: Raised as a ninja, Satoko is hardworking and sincere—but hilariously out of touch with the modern world. She’s disciplined but often falls victim to her own eccentric logic.
Relationship with Konoha: After Konoha saves her life, they begin living together. Their bond starts awkward but deepens over time through shared experiences.
Why She Stands Out: The stark contrast between her fearsome ninja skills and everyday clumsiness makes her a delight to watch.

Konoha Kōga (Voiced by: Kana Hanazawa)

Personality & Background: Calm, composed, and deadly efficient. Konoha hides her assassin identity behind the facade of a quiet schoolgirl. While she rarely shows emotion, she has a strong sense of responsibility.
Relationship with Satoko: Acts like Satoko’s guardian—sometimes scolding, sometimes silently supporting her. Pretends not to care, but clearly does.
Why She Stands Out: Her emotional subtlety and dry humor contrast beautifully with Satoko’s chaotic energy.

Marin Izutsumi (CV: Yu Serizawa)

Personality & Background:
Marin is a sharp-minded, self-proclaimed “rival assassin” who doesn’t rely on physical combat but instead uses a wide array of self-made gadgets and inventions in battle. She’s a mix of logical and quirky, approaching everything with strategy, yet her childish competitiveness often shows through.
Relationship with Konoha & Satoko:
Marin views Konoha as her rival and suspects Satoko is the reason behind Konoha’s recent rise in the assassin rankings. To break their bond, she sends her handmade robot (Robo-ko) to spy on them and stir things up. While she’s not outright antagonistic, she definitely adds chaos to the duo’s peaceful life.
Highlight Moments:
As the tech-gag specialist of the show, Marin’s wild inventions and over-the-top antics bring energy and comic relief to every scene. Her ridiculous strategies and frequent gadget malfunctions make her a lovable troublemaker. Her fast-paced dialogue, brought to life by Yu Serizawa, adds even more charm.

7. About the Original Work

Manga Title: A Ninja and an Assassin Under One Roof
Author: Hamburger
Publisher: Comic Dengeki Daiohji (KADOKAWA)
Debut: 2021
Volumes Released: 5 volumes as of March 2025
Notable Recognition: Nominated for the “Next Manga Awards 2022” and gained significant buzz on Japanese social media.

Fans of the manga love its brisk humor and strong character dynamics. When the anime adaptation was announced, it trended on X (formerly Twitter), building even more anticipation.

8. Highlights & Must-See Points

1. 🥷 An Unlikely Roommate Duo

A ninja on the run and a high school assassin under one roof—what could go wrong? This unusual pairing leads to daily chaos as they navigate the everyday world of chores, grocery shopping, and cooking… all while being elite warriors.

✔️ A perfect balance of the extraordinary and the ordinary, blending intense backgrounds with cozy slice-of-life moments.

2. 🎭 Charming Characters & Hilarious Interactions

Satoko, the naive ninja; Konoha, the cool-headed assassin; and Marin, the wild-card gadget girl—all bring something unique to the table. Their chemistry and fast-paced banter keep each episode lively and unpredictable.

✔️ Ideal for fans of buddy comedies and character-driven stories. The humor hits just right with clever timing and witty writing.

3. 🎨 Visual Style by Studio Shaft

Created by Shaft, known for Monogatari Series and Puella Magi Madoka Magica, the anime features stylish direction, dynamic camera angles, and artistic use of color and space.

✔️ Visually compelling for fans who appreciate high-concept direction and unique production aesthetics.

4. 🎵 Music That Sets the Mood

From tense action scenes to calm slice-of-life moments, the soundtrack complements every tone. While the opening and ending themes haven’t been revealed yet, the background score already builds immersive atmosphere.

✔️ The music enhances emotional beats and transitions, adding depth and energy throughout the show.

5. 🔧 Comedy Meets Invention

Thanks to Marin and her chaotic inventions, there’s never a dull moment. Her absurd gadgets and weird strategies inject extra laughs into every episode while also advancing the plot.

✔️ It’s a great mix of smart comedy, mild action, and heartwarming moments—easy to watch, hard to stop.

Recommended For:

Fans of light-hearted action and buddy comedies
Viewers who enjoy Shaft’s signature visual direction
Those looking for character-focused, slice-of-life storytelling with a twist
Anyone who appreciates quirky humor and great chemistry between leads

9. Final Thoughts & What to Expect

A Ninja and an Assassin Under One Roof blends comedy, action, and character-driven drama into a fast-paced, feel-good experience. Its approachable humor and layered characters make it perfect for a wide audience.

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