Yuki Tsukishiro

Yuki Tsukishiro is the mysterious voice that occasionally speaks to Sakuraba Emma throughout the game’s first playthrough.

The game’s first-route narrator is also revealed to be Yuki, meaning she has been telling the story from behind the scenes.

In life, Yuki was a friend of Emma and Nikaido Hiro during their middle school days.

In death, she becomes the Great Witch that the mastermind of the Prison Manor incident, Hikami Meruru, has been seeking all along.

Yuki was once a powerful Great Witch who scattered “witch factors” across the world.

By doing so, she caused many forms of magic to be lost and forced witches to hide themselves within human society.

Despite being a witch, Yuki tried to live among humans as an ordinary girl.

However, misfortune constantly followed her: strange insects appeared around her, foul smells spread, flowers withered, and illnesses broke out.

These ominous phenomena, caused by the witch factor surrounding her, made Yuki the target of bullying and hatred.

Overwhelmed by this persistent persecution, she ultimately took her own life as a human.

Emma was one of the very few people who befriended Yuki despite the misfortune around her.

Because of that, Yuki loves Emma deeply, seeing her as a precious friend who once chose her over fear and prejudice.

Later, Emma, desperate not to be hated by others, ends up abandoning Yuki to protect herself.

Even so, Yuki calls Emma’s kindness “love of hypocrisy” in a strangely affectionate way: she claims to “like hypocrisy” and is fascinated by Emma’s pure heart being dragged into killing.

After her death, Yuki attaches herself to Emma as a ghostly Great Witch.

She grants Emma the terrifying magic of “Witch Slayer,” a spell that can kill witches, driven by the desire to see Emma, with her beautiful heart, slaughter many people.

Yuki’s relationship with Emma is a twisted blend of gratitude, resentment, love, and morbid curiosity.

She wants Emma to be happy, yet also desperately wants to drag Emma into the same darkness and despair that consumed her.

Yuki is the central hidden force behind the world’s magical system and its impending collapse.

She originally seeded “witch factors” across humanity, which later become the basis for both magic and the world-ending crisis.

The ritual to summon Yuki requires 13 witches to concentrate their will on a ritual sword.

When all 13 potential witches are fully awakened and directed into the ritual, the Great Witch can be revived.

In the very final “death rewind” loop, Nikaido Hiro returns to the very first day of his confinement in the Prison Manor.

Already in the process of turning into a witch himself, he forces Hikami Meruru to open the Witch Trial and makes sure that all witch candidates fully awaken.

By pushing every candidate into true witchhood, Hiro completes the conditions for the Sabbath ritual.

As a result, Yuki Tsukishiro is fully resurrected as the Great Witch in the final route.

After her revival, Yuki displays the ability to use the same kinds of magic held by the various witch candidates.

She stands as a one-woman embodiment of all their powers, fully capable of overwhelming both humans and witches.

Yuki’s grand plan is to forcibly trigger the witch factors within every human.

She intends to make all humans transform into grotesque monsters—“witches” shaped by their own inner ugliness—only to have them slaughtered using Emma’s Witch Slayer magic.

In short, she wants mankind to be turned into the very monsters they feared and hated in witches.

Then she plans to let Emma, the girl she loves and also resents, exterminate them all as humanity’s executioner.

Nikaido Hiro believes that Witch Slayer should work even against the Great Witch herself.

He tries to convince Emma to kill Yuki and thereby save the world.

Yuki, however, reveals the terrifying catch to Witch Slayer.

Once activated, this magic remains permanently deployed and keeps expanding, ultimately annihilating not just witches but humanity as well.

Hiro is crushed by this revelation, realizing that the “solution” would erase the entire world.

Yuki’s plan appears inescapable: either accept total destruction or accept Yuki’s horrifying scenario.

At this point, Emma points out a contradiction hidden within Yuki’s own story and motives.

Through Sawatari Coco’s clairvoyant magic, Emma has been shown the true wishes of the island’s witches, and she uses this to challenge Yuki’s worldview.

Emma argues that, despite Yuki’s hatred and desire for revenge, Yuki once believed in humans.

As proof, Emma points to the fact that Yuki picked up and raised Hikami Meruru, who was originally a human child, showing that Yuki used to trust in people.

Yuki stubbornly insists that, as a witch, she can never truly coexist with humanity.

Still, Emma and Hiro’s words dig into the doubt she has tried to bury, exposing that some part of her wanted to be understood and accepted.

Gradually, Yuki admits that her contact with Emma and Hiro has caused her to waver.

She acknowledges that, on some level, she had already left the final decision about her revenge in Emma’s hands.

This means her supposedly perfect plan contained a built-in “escape hatch” born from her own reluctance to go through with absolute destruction.

Emma seizes that opening and refuses to accept a world with no good ending.

Yuki openly states that her own resurrection is synonymous with despair.

She coldly tells the others that there can be no such thing as a “good ending” if the Great Witch exists.

Even if they stop the current plan, Yuki understands that a being as dangerous as herself would never be allowed to live.

The world will always see her as a threat as long as she has control over the witch factors.

Accepting this, Yuki chooses a third option that rejects both her revenge and mass annihilation through Witch Slayer.

She decides to neutralize all witch factors in existence, turning them into harmless elements.

Yuki resolves to gather all of these now-harmless witch factors into herself.

By removing them from the world and erasing her own existence, she can ensure that no new witches or magical disasters will ever be born again.

Before acting, Yuki takes a moment to say goodbye to Emma and Hiro.

It is a quiet, heavy farewell, filled with everything she never properly expressed as a bullied human girl or as a vengeful Great Witch.

She then causes the ritual sword to float and transforms it into a spear.

Without hesitation, she impales herself with it to carry all the neutralized witch factors away and disappear.

However, Hikami Meruru suddenly leaps into the path of the spear and embraces Yuki as they are pierced together.

Meruru chooses to vanish with Yuki, refusing to let the Great Witch bear this burden alone.

Yuki apologizes to Meruru for dragging her into her tragedy and final self-sacrifice.

Meruru, however, is content and satisfied, having fulfilled her role beside the one she revered.

In her last moments, Yuki praises Meruru for everything she has done, acknowledging her fully.

The two then quietly fade away together, taking the witch factors and the era of witches with them.

Yuki Tsukishiro is a character built on contradictions: a victim who becomes an avenger, a mentor who wants to see her disciple fall, and a monster who still longs to be loved.

Her love for Emma is genuine yet deeply warped by trauma, turning into a desire to witness Emma’s “beautiful heart” stained with blood.

She is intelligent, analytical, and merciless in her logic, often speaking with icy detachment.

At the same time, her vulnerability leaks through whenever her past as a bullied human girl is poked at.

Yuki calls herself incompatible with humanity, but her actions suggest the opposite: she keeps watching humans, choosing them, testing them.

Her adoption of Meruru and her lingering attachment to Emma and Hiro show that she can never completely let go of her hope in people.

Her claim that “there can be no good ending” serves as both a threat and a challenge to the player and characters.

In the end, Yuki’s own decision to sacrifice herself to protect the world becomes the closest thing to a “good ending” the story can offer.

Yuki embodies the core themes of the game: the cycle of hatred, the danger of dehumanizing others, and the desperate hope that even a world drenched in blood can still change.

She is at once the story’s greatest nightmare and its final, tragic savior.

In the first playthrough, when Emma sees magically induced out-of-season snowfall, she murmurs Yuki’s name in a way that subtly hints at the connection between them.

This small detail foreshadows that the comforting yet eerie voice speaking to Emma may not be human.

Prior to the game’s release, the official social media account became famous for its brutally honest Q&A posts.

Some fans theorize that the “speaker” behind those merciless answers is actually Yuki Tsukishiro in-character, matching her cold, cutting personality.

Because she serves as both narrator and hidden final antagonist, Yuki’s presence can be felt even when she is not on screen.

Replays of the game often reveal that many seemingly neutral narrative lines are colored by Yuki’s perspective and bias.