This article is part of my Fatal Frame II: Crimson Butterfly Analysis series, focusing on Mio and Mayu’s psychology in the Frozen Butterfly Ending.
The Frozen Butterfly Ending in Project Zero 2: Wii Edition, the Nintendo Wii version of Fatal Frame II: Crimson Butterfly, is the coldest and most painful ending in the game.
Just when Mio believes she has finally brought Mayu back, their relationship collapses in an unimaginable way.
What lies there is not simple madness or murderous intent.
In this article, I will organize the flow of the Frozen Butterfly Ending, then examine why Mayu laughs while crying and what this ending truly reveals.
Please note that this article contains major spoilers for Fatal Frame II: Crimson Butterfly. If you want to review the main story first, I recommend starting with the Fatal Frame II: Crimson Butterfly main story overview before reading this analysis.
- Frozen Butterfly Ending | Synopsis
- Frozen Butterfly Ending Analysis
- Reading Frozen Butterfly Through Crimson Butterfly | “Frozen Butterfly” Is the Inversion of “Crimson Butterfly”
- Mayu’s Psychology | Why Did Mayu Try to Make Mio Strangle Her?
- The Core of the Frozen Butterfly Ending | Why Couldn’t Mio Do It?
- The Meaning of Laughing While Crying
- What Does “I Don’t Mind If I’m in Hell” Mean?
- The Crimson Butterfly in the Frozen Butterfly Ending
- What Was “Mio’s Head” in the Hina Doll Room?
- Summary: What Was the Frozen Butterfly Ending?
Frozen Butterfly Ending | Synopsis
Deep underground, Mio reaches the Utsuro.
Mayu is standing at the edge of the Utsuro.
“I’ve been waiting…
In this dark, dark place…
Shall we begin?”
The voice sounds like Mayu’s.
And also like Sae’s.
Deeper.
Deeper still.
Amid the whispers trying to pull her down into the depths, Mio raises the Camera Obscura.
A single shot to bring Mayu back.
Sae, who had been overlapping with Mayu, disappears with a scream.
For a brief moment, Mio believes the darkness has finally been torn away.
— Mayu is saved.
That is what she believes.
Only then does the tension finally leave her body.
“Mayu!
I found you!
Don’t run away anymore!”
Mio embraces Mayu in relief, clinging to the thought that the sister she had been searching for has finally returned to her.
But from within Mio’s arms, Mayu whispers sweetly into her ear.
“I won’t go anywhere.
We will become one.
Now, there is something you must do.
You know, don’t you?”
Then Mayu guides Mio’s hands toward her own neck.
Why…?
Mayu should be safe now…
There’s no way I can do that…
“No!”
Mio instinctively pulls her hands away.
She believed that if she exorcised Sae with the Camera Obscura, Mayu would return to normal.
But that was not true.
What Mio thought she had torn away was, in fact, something that had been sunk deep inside Mayu from the very beginning.
The moment Mio rejects her, the last hope remaining inside Mayu is severed.
Inside Mayu, two impossible feelings collide.
I want Mio to kill me.
And yet, Mio cannot kill me because she is kind.
That kindness is exactly why I love her.
That contradiction tears Mayu’s heart apart.
Mayu begins laughing as if broken, even as she cries.
Seeing her like that, Mio remembers.
Sae laughing madly in the Main Hall.
Mayu as a child, holding her broken leg at the bottom of the cliff.
Both of them had been laughing while crying.
Mio loses her words.
Then Mayu’s fingertips quietly reach toward Mio’s neck.
“If we won’t truly be together…
If we won’t become one…
Then I don’t mind if I’m in hell.
As long as I’m with you.”
These are not words of release.
Mayu is no longer asking to be saved.
If being saved means remaining separate from Mio, then salvation itself has lost its meaning for her.
Even if the place ahead is hell, even if the suffering continues forever, she would rather stay there with Mio than return alone.
A single crimson butterfly drifts helplessly through the cold air.
When it reaches Mio’s shoulder, it stops moving.
Mio’s eyes are slightly open.
But those eyes no longer reflect anything.
Mayu holds Mio in her lap and continues touching her hair again and again.
Almost as if gently telling the unresponsive Mio:
“Let us be together.
Together forever.”
For one brief instant, lightning flashes.
In that light, what lies around the two of them becomes visible.
Countless corpses piled on top of one another.
Mio and Mayu, left behind in the center of the cold Main Hall.
When the light disappears, everything sinks back into darkness.
The Hina Doll Room in Kurosawa House.
A shadow sways beyond the shoji screen.
A whisper leaks through.
Mayu is applying color to Mio’s lips.
It resembles the childhood game they used to play, when they tried to act a little more grown-up.
But Mio no longer answers that game.
Even so, Mayu carefully layers the color on, just as she did long ago.
A tear appears at the corner of Mio’s eye.
When Mayu notices it, she does not wipe it away with her finger.
Instead, she gently catches it with her lips.
I cannot allow even a single tear to leave me.
After finishing Mio’s lips, Mayu holds Mio’s head close, as if it were something precious.
Then, like a child speaking to a doll, she begins to whisper again.
“We will stay here.
Just the two of us.”
Frozen Butterfly Ending Analysis
The Frozen Butterfly Ending contains many mysteries.
What is the Frozen Butterfly?
Why does Mayu laugh while crying?
And what happened to Mio?
From here, I will examine these points through analysis.
Reading Frozen Butterfly Through Crimson Butterfly | “Frozen Butterfly” Is the Inversion of “Crimson Butterfly”
When thinking about the Frozen Butterfly Ending, the first thing to keep in mind is its contrast with the Crimson Butterfly Ending.
In the Crimson Butterfly Ending, Mio takes on the burden of Mayu’s wish.
Mayu cannot accept living separately from Mio.
And Mio, too, cannot fully reject that wish.
As a result, the Crimson Sacrifice Ritual is completed, and Mayu becomes a crimson butterfly that rises into the sky.
There is loss here.
There is an irreversible farewell.
And yet, at the same time, the darkness covering the village is broken, and the trapped spirits are released.
In the Crimson Butterfly Ending, Mayu’s death is a tragedy, but it is also sublimated as the completion of the ritual.
By contrast, the Frozen Butterfly Ending reverses that flow.
Mio believes she has managed to save Mayu.
But Mayu guides Mio’s hands toward her own neck.
Up to this point, the scene resembles the Crimson Butterfly Ending.
The decisive difference is that Mio cannot bring herself to do it.
- She does not want to hurt Mayu.
- She does not want to kill her.
- She cannot end the life of the sister she has finally brought back with her own hands.
For Mio, who has continued trying to protect Mayu all this time, this is a natural reaction.
And yet, for Mayu, that kindness cannot save her.
To summarize the contrast:
- In Crimson Butterfly, Mio takes Mayu’s wish upon herself.
- In Frozen Butterfly, Mio does not take Mayu’s wish upon herself.
This difference separates the two endings in a fundamental way.
And it also affects where the butterfly goes.
Crimson Butterfly and Frozen Butterfly | Where the Butterfly Goes in Each Ending
In the Crimson Butterfly Ending, the crimson butterfly born from Mayu rises into the sky.
In the Frozen Butterfly Ending, the crimson butterfly that seems to be born from Mio drifts weakly through the dark, cold Main Hall.
In Frozen Butterfly, the butterfly does not go toward the sky.
- It cannot pacify the Utsuro.
- It cannot bring the night to an end.
- It can only drift back toward Mio’s lifeless body.
- It can only come to rest on her shoulder.
This is the cruelty of Frozen Butterfly.
Frozen Butterfly is not a butterfly that failed to become a crimson butterfly.
It is a butterfly that became crimson, yet could not return to the sky.
In Crimson Butterfly, Mio completes the ritual by losing Mayu.
In Frozen Butterfly, Mayu completes a closed world for only the two of them by losing Mio.
In that sense, both endings are the same: each is a conclusion where one twin loses the other.
But the direction of that loss is different.
- In Crimson Butterfly, the lost one is sent into the sky.
- In Frozen Butterfly, the lost one is kept at one’s side.
This difference makes the coldness of the Frozen Butterfly Ending even deeper.
Mayu did not “lose Mio” by killing her.
Rather, by killing Mio, Mayu made Mio her own.
If Crimson Butterfly is an ending where loss moves toward the sky through sublimation, then Frozen Butterfly is an ending where even loss is never released, but locked away in a cold place.
Unable to return to the sky.
Unable to save the village.
The butterfly freezes beside Mayu.
Mayu’s Psychology | Why Did Mayu Try to Make Mio Strangle Her?
Even after Sae disappears, Mayu still urges Mio to perform the ritual.
“I won’t go anywhere.
We will become one.”
Mayu’s feelings had been moving toward that point all along.
Mayu did not try to make Mio strangle her simply because she wanted to die.
She wanted Mio to accept her wish.
The ritual to become one with her other half.
The act through which two people born separately return to the same place once more.
— Mio will be the one to kill me.
For Mayu, Mio taking action was both the final kindness and the final affirmation.
What Mayu truly wanted was for the feeling that “we cannot remain separate” to be ended by Mio’s own hands.
She wanted Mio herself to undo the boundary between them.
That is why Mayu guides Mio’s hands toward her own neck.
“Now, there is something you must do.
You know, don’t you?”
Behind those words was a plea.
- I want you to understand me.
- I want you to come with me to the place I want to reach.
That is what Mayu was trying to tell Mio.
But Mio pulls her hands away.
For Mayu, that action is rejection.
- She could not be killed by Mio.
- She could not become one with Mio.
- Her wish was not accepted.
The moment Mio’s hands leave her, Mayu tastes the pain of being abandoned.
The Core of the Frozen Butterfly Ending | Why Couldn’t Mio Do It?
Mayu guides both of Mio’s hands toward her own neck.
But Mio cannot bring herself to do it.
For Mio, Mayu is someone she wants to save.
Everything Mio has done until now—
moving through the village, facing dangerous wraiths, calling Mayu’s name again and again—
was all for the sake of saving Mayu.
— I want to keep living with Mayu after this…!
That is why Mio cannot possibly take Mayu’s life.
For Mio, being unable to do it is love.
- Mio loves Mayu, so she cannot kill her.
- Mayu loves Mio, so she wants Mio to kill her.
The same feeling demands completely opposite actions.
This mismatch is the core of the Frozen Butterfly Ending.
In the Crimson Butterfly Ending, Mio takes Mayu’s wish upon herself in the form of an ending.
But in the Frozen Butterfly Ending, she cannot go that far.
Even after touching Mayu’s wish, Mio cannot cross the final line.
She remains, until the end, on the side of reality.
For Mio, “saving Mayu” means returning home together while still alive.
For Mayu, however, “salvation” means stepping away from a life in which they would continue to grow separate.
Mio’s feelings and Mayu’s feelings never become the same thing.
That mismatch cuts the last thread still remaining inside Mayu.
The Meaning of Laughing While Crying
One of the most striking moments in the Frozen Butterfly Ending is the scene where, immediately after Mio pulls her hands away, Mayu begins laughing while crying.
The moment Mio shakes her hands free, two emotions collide inside Mayu.
One is hatred toward Mio, who would not accept her wish.
- No matter how much I wish for it, Mio will not come down to the place where I am…
- She will not make “Together forever” come true in the form I want…
The other is her love for Mio.
- She always cares about me…
- Even after seeing me like this, she still tries to protect me…
I hate Mio because she will not accept me—
But I love Mio because she cannot hurt me—
Those contradictions overlap inside Mayu without ever coming undone.
What appears on the surface as a result is that tearful smile.
What overlaps here is Sae.
Perhaps Sae, who laughed madly in the Main Hall, had truly been crying as well.
By seeing Mayu’s tearful smile, Mio realizes this.
Sae had continued waiting for Yae.
- She wanted Yae to kill her.
- She wanted Yae to come for her.
- She wanted to become one with her.
But Yae never came.
Resenting her…
Hating her…
And yet still longing for Yae…
Sae, too, had broken in the same way as Mayu.
After that, Mayu’s tearful smile also overlaps with the memory from childhood.
Mayu, fallen from the cliff, holding her injured leg.
Mayu, laughing as if broken while crying.
Mayu carried both the joy that “with this wound, I can keep Mio tied to me” and the sorrow that “the future where Mio leaves me someday can never truly be avoided.”
- the pain Sae carried as she kept waiting
- the despair Mayu held in childhood
Everything that had always been inside Mayu bursts out, no longer able to be held back after Mio’s rejection.
Loving her…
Hating her…
Not wanting to be apart…
Unable to forgive her…
And still, it has to be Mio.
That smile through tears was the moment Mayu broke.
At the same time, it was also proof that, until the very end, she had continued to long for Mio.
What Does “I Don’t Mind If I’m in Hell” Mean?
In the Frozen Butterfly Ending, Mayu reaches toward Mio’s neck and says:
“Then I don’t mind if I’m in hell.
As long as I’m with you.”
Mayu’s wish is not to be separated from Mio.
If that wish cannot be fulfilled by ending herself, then she can only fulfill it by ending Mio instead.
Even if Mio becomes a butterfly, Mayu wants to keep her by her side.
- I don’t mind if it stays painful.
- Hell is fine.
- If I can remain with Mio without ever being separated, that is enough
If Mio is there, I can endure it—
So let us remain in suffering together—
The crimson butterfly drifts through the cold Main Hall and comes to rest on Mio’s shoulder.
A butterfly that can no longer go anywhere.
What exists there is not sublimation.
It is confinement.
The words “I don’t mind if I’m in hell” show Mayu’s desperate wish to remain in a place where she will not be separated from Mio, even if that means continuing to suffer.
Mayu resents Mio.
She cannot forgive Mio for refusing to accept her wish.
And yet, she does not want to let Mio go.
With love and hatred still tangled together, Mayu seeks a place where she can remain with Mio without ever being separated.
She punishes Mio and confines her.
At the same time, she treats her with tenderness and whispers, “Let us be together.”
That is what the Frozen Butterfly Ending is.
If being saved means being saved alone, then Mayu would rather remain in hell together.
That inescapable longing prevents the crimson butterfly from returning to the sky, and freezes it inside a closed world.
The Crimson Butterfly in the Frozen Butterfly Ending
The crimson butterfly that appears in the Frozen Butterfly Ending is likely the most important image for understanding this conclusion.
After Mayu strangles Mio, Mio already appears to have lost her life.
Immediately afterward, a single crimson butterfly drifts weakly through the dark Main Hall and eventually comes to rest on Mio’s shoulder.
It is natural to read this butterfly as Mio’s soul transformed into a crimson butterfly.
However, unlike the butterfly in the Crimson Butterfly Ending, this butterfly does not rise into the sky.
- dawn never comes
- the village is never pacified
It is born, and yet it cannot return.
The butterfly that freezes in place looks like Mio herself, trapped inside Mayu’s idea of “Together forever.”
If the butterfly in the Crimson Butterfly Ending is a symbol of farewell and sublimation, then the butterfly in the Frozen Butterfly Ending is a symbol of possession and stagnation.
A crimson butterfly with wings that should allow it to fly, yet unable to go anywhere.
A crimson butterfly unable to return to the sky, trapped in a cold place.
That is what the Frozen Butterfly is.
What Was “Mio’s Head” in the Hina Doll Room?
The Hina Doll Room shown at the end of the Frozen Butterfly Ending quietly reveals the strangeness of this conclusion.
In childhood, Mio and Mayu used to play a secret game in a place where no one would find them—
Mayu would color Mio’s lips red.
In the Frozen Butterfly Ending, Mio becomes a crimson butterfly.
Because of this, what Mayu is dealing with here can be understood as the remains of what was once Mio.
- it does not refuse her
- it does not go anywhere
Mayu has placed beside herself a version of Mio that can no longer reject her.
What was once a secret game they enjoyed together has become Mayu’s solitary play.
In the Hina Doll Room, Mayu’s distorted attachment deepens.
The dolls displayed on the hina platform—and among them, even what remains of Mio is treated like a doll.
No matter how broken it is, no matter how conveniently it is handled, a doll does not resist.
“Mio’s head” was the final form of the Mio Mayu wanted:
a Mio who would never go anywhere.
Because Mayu did not want to be separated from Mio, she transformed Mio into something she could keep beside her forever.
The place Mayu longed for, a place where she would never have to be separated from Mio, could only exist by taking Mio’s freedom away.
Why Mayu Catches Mio’s Tear with Her Lips
Mio’s sadness.
Something spilling out from inside Mio.
For Mayu, even Mio’s emotions belong to her.
She wants to keep every part of Mio inside herself.
That is why she catches Mio’s tear with her lips.
The Hina Doll Room is the final destination of the Frozen Butterfly Ending.
The promise of “Together forever” ends up freezing not only Mio herself, but also her freedom, life, and emotions.
What remains there is the end of two people who have shut themselves inside a childhood memory and can never go outside again.
Mayu did not want to lose Mio.
So she made Mio into a form that could never leave.
Mio’s head left in the Hina Doll Room was likely the coldest answer Mayu’s wish could reach.
Summary: What Was the Frozen Butterfly Ending?
The Frozen Butterfly Ending is a conclusion in which love becomes so intense that one person can no longer love the other while allowing her to live.
Mayu’s inescapable longing takes Mio’s freedom away.
And in doing so, Mayu obtains a Mio who will never leave her.
“Together forever” freezes before love and hatred can be told apart—
that is the Frozen Butterfly Ending.
If Frozen Butterfly is a conclusion where Mayu’s longing freezes Mio in a cold place, then Shadow Festival is a conclusion where Mio chooses to remain with Mayu and sinks with her into a time that will never return.
Next time, I will examine what the Shadow Festival Ending reveals—a lingering stillness that closes together with Mayu’s feelings.
Thank you for reading, and I hope you will stay with me for the next article.
Fatal Frame II: Crimson Butterfly Analysis Hub
Fatal Frame II: Crimson Butterfly Analysis Series
Analysis Article #2: The Cliff Scene｜Why Mio and Mayu See Different Worlds
Analysis Article #5: The Opening Scene｜The Unfinished Words and Their Connection to the Endings
Analysis Article #6: Main Story Analysis｜How Did Mio Change Throughout the Story?
Analysis Article #7: Crimson Butterfly Ending｜Why Did Mio End Up Killing Mayu?
Analysis Article #8: Lonely Road Home / One Wing Endings｜Explaining the Price Mio Had to Bear
Analysis Article #9: Frozen Butterfly Ending｜Mayu’s Tearful Smile and the Head in the Hina Doll Room
Analysis Article #10: Shadow Festival Ending｜Why Did Mio Say, “This Time, We Fall Together”?
Analysis Article #11: The Promise Ending｜The Meaning of “I’ll Never Let You Go Again”
Analysis Article #14: Sprouting Wings + Remaining Sun Endings｜What It Means for Mio and Mayu to Return Alive
*This article is part of the “Fatal Frame II: Crimson Butterfly Analysis” series.
*The images used in this article include unofficial AI-generated images inspired by the world of the game, as well as screenshots from FATAL FRAME II: Crimson Butterfly REMAKE and Project Zero 2: Wii Edition. All rights to Fatal Frame II: Crimson Butterfly belong to Koei Tecmo Games.
*This article refers to certain official materials that are currently difficult to obtain. Their contents are summarized only where necessary for understanding the story, while the article itself focuses mainly on analysis and interpretation.
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