Is Assassin & Cinderella Worth Reading?

Quick Answer
Yes, if you want a mature, crime-thriller-flavored contract-marriage romance where neither lead is entirely who they claim to be.
Quick Verdict
“This is a tense, well-built spy-versus-assassin romance that uses mutual deception between its leads to keep the central relationship genuinely uncertain.”
Best for: readers who want an adult contract-marriage romance with real crime-thriller stakes and two leads each playing their own angle.
Not for: readers wanting a lighter, non-suggestive romance -- this one leans into a more mature, josei-adjacent tone.
- Type
- Manga
- Genres
- Romance, Drama
- Status
- Ongoing
- Author
- Yuzo Natsuno
- Publisher
- Square Enix
- Platform
- Manga UP! Global
| Quick facts | |
|---|---|
| Format | Manga (josei), 30 chapters, 6 volumes |
| Run | 2022–present · ongoing |
| Community score | AniList 6.5 · MangaUpdates 6.8 |
| Content | Crime/mafia-adjacent violence and consistently suggestive, fanservice-leaning cover and interior art between the two adult leads; officially rated by MangaDex as suggestive, not explicit. |
What It's About
Neneko Sato is a spy, assigned to infiltrate a rival criminal organization by seducing and extracting secrets from Omi Amai, one of its assassins. The mission goes sideways almost immediately -- Omi sees through her cover -- but instead of eliminating her, he proposes something stranger: a marriage of convenience as the price for her safety. What follows is a relationship built on mutual deception, where Neneko has to figure out whether Omi's affection and clinginess toward her is just another manipulation, or something real, while her own feelings complicate the mission she was sent to carry out.
Why It Works
This is a slick spy-versus-assassin romance that gets real mileage out of its central question of trust -- neither lead is exactly who they claim to be, and the story plays that uncertainty for both tension and genuine chemistry rather than resolving it too quickly. The mafia-adjacent crime backdrop gives the romance real stakes beyond the usual contract-marriage setup, and the push-pull between Neneko's professional mission and her growing feelings keeps the story moving. It's a more mature, josei-leaning take on the fake-relationship romance trope.
Who Should Read This
This is a good fit for readers who want a contract-marriage romance with real crime-thriller stakes and two leads who are both playing an angle. It's an adult romance with suggestive content, so go in expecting a more mature tone than a typical school romantic comedy.
Where to Read It
Assassin & Cinderella is officially licensed in English through Manga UP! Global (Square Enix), with print volumes also available through Square Enix Manga & Books.
Strengths & Weaknesses
Strengths
- A genuinely tense will-they-won't-they built on mutual deception rather than a simple misunderstanding
- Real crime-thriller stakes layered on top of the romance
- Officially licensed with an easy, legal way to read and support it
Weaknesses
- Still ongoing, with no conclusion yet
- The more mature, suggestive tone won't suit readers wanting a lighter romance
Frequently Asked Questions
Is Assassin & Cinderella finished, or still ongoing?
It's still ongoing, with 6+ volumes released so far and no ending yet.
Where can I read Assassin & Cinderella legally?
It's officially licensed in English through Manga UP! Global (Square Enix), with print volumes also available.
How dark or mature is Assassin & Cinderella?
It's an adult, suggestive-rated romance with crime/mafia-adjacent content -- more mature in tone than a typical school romantic comedy.
What's the premise of Assassin & Cinderella?
A spy sent to seduce a rival organization's assassin for information ends up in a marriage of convenience with him instead, each trying to figure out if the other's feelings are real.