One of the most haunting and beautiful moments in the Chainsaw Man: Reze Arc movie is the scene where Reze quietly sings in Russian while strangling an assassin.
The mysterious melody and gentle voice left many fans wondering — What was that song? Where did it come from?
This article explores the truth behind the song, the rumors surrounding it, and what creator Tatsuki Fujimoto revealed about its real meaning.
Image Credit :Tatuki Fujimoto 藤本タツキ/Shueisha 集英社
Was It a Real Russian Song?
Surprisingly, no.
After extensive research by fans, it seems that the song Reze sings does not actually exist in Russia.
There’s no record of a traditional or modern Russian song matching its melody or lyrics.
Instead, the song appears to be an original creation made specifically for Chainsaw Man.
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The Rumored Origin: Dearest Mary Jane (1994)
For a while, Japanese fans believed that the song might have been inspired by Betty Neels’ 1994 romance novel Dearest Mary Jane.
In the novel, Mary Jane loses her parents at a young age and grows up with her beautiful sister Felicity.
Felicity becomes a glamorous model, while Mary Jane leads a quiet life running a small café.
When Mary Jane meets a kind doctor named Sir Thomas, she falls for him — only for him to fall for her sister instead.
Because of the book’s gentle tone and its themes of quiet love and heartbreak, some fans speculated that it could be the “source” of Reze’s song.
However, this remains only a rumor, and there’s no evidence connecting the two.
The Truth from Tatsuki Fujimoto
According to the official guidebook distributed in Japanese theaters with the release of the Chainsaw Man: Reze Arc movie,
creator Tatsuki Fujimoto personally explained the meaning of the song:
“It’s just a song about an ordinary date.
At the end, the person sleeps in a church — it’s about wanting to live and die like a normal person.”
— Tatsuki Fujimoto
The title of the song is “Jane Slept in the Church.”
This confirms that it’s an original composition by Fujimoto, not a Russian folk song or Western adaptation.
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What the Scene Represents
Image Credit :Tatuki Fujimoto 藤本タツキ/Shueisha 集英社
Reze’s quiet singing during a violent moment perfectly reflects her inner conflict.
On one hand, she dreams of living a peaceful, normal life — enjoying café dates and laughter with Denji.
On the other hand, she’s a trained assassin and hybrid weapon, forced to kill to survive.
Singing a gentle “date song” while taking someone’s life emphasizes this tragic duality:
Reze is both human and weapon, both lover and killer.
The use of Russian adds another layer of symbolism — a reminder of her origins and the distant, cold world she came from.
Her song becomes a kind of prayer: a quiet wish to be human, even if only for a moment.
A Symbol of Reze’s Humanity
In the film, Reze also receives a red gerbera flower, symbolizing passion, courage, mystery, and new beginnings.
It’s often given to people who are “taking their first step toward a new life.”
In flower language, a single gerbera also means “You are my destined one” or “Love at first sight.”
Together, the song and the flower beautifully represent Reze’s deepest wish —
to take that first step into a peaceful, ordinary life with Denji, something forever just out of reach.
Official Trailer “Jane Slept in the Church” for Chainsaw Man: The Movie – Reze Arc Released Worldwide
The official video “Jane Slept in the Church” from Chainsaw Man – The Movie: Reze Arc was officially released on November 4. — check it out now!
Conclusion
The song “Jane Slept in the Church” is not a real Russian melody — it’s a symbolic, original creation by Chainsaw Man’s author Tatsuki Fujimoto.
It embodies everything that makes Reze unforgettable:
her warmth, her tragedy, and her impossible dream of being an ordinary girl in a world of devils and violence.
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Jane Slept in the Church
(Song sung by Reze – Chainsaw Man: Reze Arc)
День моего свидания с Джейн
All is ready for my date with Jane
Утром мы пойдем вместе в церковь
In the morning, we’ll go to the church together
Мы будем пить кофе и есть омлеты в кафе
Let’s drink coffee and eat omelets at a café
После того как мы прогуляемся в парке
After that, we’ll take a walk in the park
Мы пойдем в аквариум и увидe любимых Джейн, дельфинов и пингвинов
Then we’ll visit the aquarium and see your favorites, Jane — the dolphins and the penguins
После обеда мы отдохнем
After lunch, we’ll take a little rest
Итак, что мы сделали утром
So, what did we do this morning?
Мы будем говорить об этом пока не вспомним
Let’s talk about it until we remember
Мы не вспомним
We won’t remember
И ночью мы будем спать в церкви
And at night, we’ll sleep in the church
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