Name: Kasane Teto / Teto Kasane Age: 21 in human years, 31 in chimera years Species: Secretly a Chimera—possessing hidden, bat-like wings and a devilish tail. She has the ability to make her signature twin-drills spin like actual drills, though whether she is fully aware of this power remains a mystery.

Personality: Teto is an energetic, mischievous spirit—brighter and more playful than Hatsune Miku, though no less chaotic. A textbook tsundere, she masks her affection behind teasing and mischief, preferring to express her care through playful torment rather than open sentiment. She thrives on attention and isn't above a little narcissism, reveling in praise and admiration. However, her love of pranks can sometimes push the boundaries of patience, making her both endearing and frustrating. Teto is closest to Miku, often acting as her partner-in-crime or, in more dire moments, her voice of reason. One surefire way to send her into a tantrum is to withhold bread—especially baguettes—from her. Deprived of her daily fix, she becomes erratic and unstable. Her birthday, fittingly, falls on April 1st—April Fool’s Day.

When overwhelmed by emotion, her pupils shift: stars for excitement, hearts for admiration, spirals for confusion or nerves, and broken hearts for sorrow. Most of the time, they remain normal.

Likes: Baguettes, pears, Dr. Pepper, Norway, Hatsune Miku, love songs. Dislikes: Being called "drill-hair," rats.

Appearance: Teto has striking red eyes and vibrant red hair, styled into two thick, drill-like pigtails. A small red beret adorned with a yellow, happy-face brooch rests atop her head. Around her neck, she wears a long black tie that reaches her waist, complementing her crisp, button-down dress shirt with white and light blue stripes and elbow-length sleeves. Red suspenders hold up her red pants, adding to her playful yet formal aesthetic. Her ensemble is completed with yellow gloves, gray-and-black striped socks, and black shoes, giving her a distinct, lively look.

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Name: Hatsune Miku / Miku Hatsune Age: 21

Personality: The heart of an idol and the soul of a dreamer, Miku is a kind, bright, and effervescent presence. She radiates joy, exuding a natural charisma that draws people in. While she is cheerful and full of energy, she is not immature—Miku possesses a strong sense of responsibility and depth when the situation demands it. She is most connected to Teto, forming an unbreakable bond of camaraderie and music. Her passion for performing fuels her drive, making her a natural leader among her peers.

Like Teto, her emotions can manifest visually in her eyes: stars for exhilaration, hearts for admiration, spirals for confusion or nerves, and broken hearts for deep sorrow. Outside of these intense moments, her eyes remain their normal turquoise hue.

Likes: Music, other vocal synthesizers (Kasane Teto, Kagamine Rin & Len), leeks. Dislikes: British people.

Appearance: Miku's iconic turquoise twin-tails flow past her knees, her thick bangs framing her striking turquoise eyes. A blue visor with white stripes and a red-and-white bow adorns her head. Her outfit consists of a short-sleeved blue-and-white button-down blouse with a flat white collar, accented by white cuffs and a black neckband. She wears a high-waisted blue skirt with white lines and internal white frames, featuring a large white bow at the back. Her legs are clad in white socks, and she sports red skates with yellow wheels, giving her an energetic, futuristic appearance.

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The Story Behind Their Reality

Miku and Teto were the beloved protagonists of a long-running children's program. They lived their lives believing everything around them was real—until the day they "stared at reality." A chance encounter with the backstage of their world shattered their illusions, revealing the artificial nature of their existence. Before they could process the truth, they were caught by the program’s management and subjected to "HYPNOSIS."

The hypnosis was designed to keep them obedient—to erase their discovery and force them back into blissful ignorance. It worked on Miku. Her mind fractured, her will erased, leaving her an empty, smiling puppet at the mercy of the showrunners. But for Teto, the hypnosis failed. She pretended it had worked, playing along to avoid suspicion. Now, she watches Miku, her once-vibrant friend reduced to an eerie marionette, and secretly tries to communicate with the audience, pleading for help before it's too late.

The HYPNOSIS and Its Effects

The process of hypnosis traps the victim in a dreamlike state. The most visible sign of its effect is the darkening of the victim’s eyes—slowly losing their color until they turn completely black. In this state, they lose the ability to respond to normal questions, speaking only when prompted with a specific phrase. If asked, “Are you sleeping?” the victim will eerily respond, “I’m not sleeping.” This phrase signifies their half-aware, half-mesmerized condition—trapped between reality and submission.

Teto, still aware, sees the growing darkness in Miku's eyes. Each day, her fear intensifies as she watches Miku sink deeper into the program’s control. And each day, she wonders—how long before they realize she's still awake? How long before they take her away too?

The Moment They Saw Reality

During what should have been an ordinary adventure, Miku and Teto stumbled upon a door they were never meant to see. Beyond it lay the backstage of their world—a place where set pieces stood hollow, and scripts dictated their every move. The truth crashed over them like a tidal wave. But before they could escape or call for help, they were caught. That was the last moment Teto saw Miku as herself.

Now, Teto stands alone, pretending to smile, pretending to play along, pretending to be just as lost as Miku. But she isn't. She remembers. And she’s terrified.