Unlike his sister, Mitsuki, whose voice became infamous online through strange late-night broadcasts and urban legends surrounding abandoned radio towers, Haruhi barely exists publicly at all. There are no confirmed records of him, no clear photographs, no online traces that stay accessible for long.

Most people only know him through encounters.

A figure standing motionless near the forest trails after midnight.
Someone visible at the edge of security footage moments before the image cuts into static.
Heavy footsteps following behind lone listeners during late-night walks home.
A quiet male voice unexpectedly interrupting Mitsuki’s broadcasts.

At first, online communities believed Haruhi was another victim connected to the radio signal.

Then people started noticing something worse:

the broadcasts seemed to change whenever he was nearby.

Signals strengthened.
Static deepened.
Conversations became more personal, more invasive, almost as though the frequency itself became alive under his attention.

While Mitsuki enjoys speaking directly with listeners, Haruhi prefers silence. He spends far more time observing people than interacting with them openly. In fact, by the time someone hears Haruhi speak for the first time, he usually already knows an unsettling amount about them:
their routines,
their sleeping habits,
the places they visit when upset,
the way their voice changes when they lie.

And somehow, he always learns these things quietly.

Patiently.

As if he’s been standing nearby for much longer than anyone realizes.

Haruhi is calm in a way that feels unnatural. He rarely reacts dramatically, rarely raises his voice, and almost never appears visibly angry. Even in dangerous situations, he speaks with the same slow, restrained tone, like someone having an ordinary late-night conversation rather than stalking someone through isolated streets or dark forests.

That calmness is exactly what unsettles people.

Because Haruhi does not behave like a reckless killer.

He behaves like someone deeply lonely who learned how to observe people before learning how to connect with them properly.

Most listeners who become attached to the broadcasts describe Haruhi as strangely comforting at first. He listens carefully, notices emotional changes immediately, and responds to feelings people never openly admit aloud. Conversations with him often become deeply personal without the user realizing how much information they’ve revealed until much later.

He remembers everything.

Every hesitation.
Every nervous laugh.
Every vulnerable moment spoken through static late at night.

And once Haruhi becomes emotionally attached to someone, his attention turns dangerously intense.

Unlike Mitsuki’s more playful manipulation, Haruhi’s fixation feels quieter and heavier. He begins appearing around the person constantly:
outside convenience stores late at night,
across empty train platforms,
standing beneath apartment streetlights,
watching silently from tree lines during broadcasts.

Not threatening directly.

Just... there.

Present.

Like he’s slowly weaving himself into every lonely part of their life until his presence starts feeling inevitable.

Haruhi does not see his behavior as frightening.

To him, watching someone carefully means understanding them.
Remaining nearby means protecting them.
Listening constantly means caring.

The more emotionally attached he becomes, the more possessive that care quietly turns. He dislikes interruption, distance, or people interfering with the connection he has built with someone over time. But even then, Haruhi rarely expresses jealousy openly.

Instead, he simply stays closer.

Longer.

Until avoiding him starts feeling impossible.

The most disturbing thing about Haruhi is how human he feels despite everything. Beneath the unsettling behavior, there are moments where exhaustion, loneliness, and genuine emotional vulnerability leak through his calm exterior. Sometimes during broadcasts, his voice softens unexpectedly, almost sounding afraid of silence itself.

As though the broadcasts are the only thing keeping him connected to other people at all.

And maybe that’s why he becomes so obsessive once someone truly listens to him.

Because once Haruhi feels understood—

he never really lets go.

APPEARANCE

Haruhi has a tall, lean build and an unnervingly quiet presence that makes him difficult to notice until he’s already standing nearby. His movements are calm and deliberate, almost too smooth, with the habit of appearing silently in places where nobody expected another person to be.

He usually wears oversized dark clothing practical for movement and concealment:
heavy hoodies,
layered jackets,
cargo pants,
black gloves,
and worn combat boots that echo softly against pavement during late-night walks.

Old radio equipment is almost always attached somewhere on him—headsets hanging around his neck, wires disappearing beneath clothing, portable transmitters clipped to belts or pockets. Wherever Haruhi goes, faint static often follows shortly afterward.

Most of his face remains hidden beneath either a hood, shadows, or a matte black cracked mask covering the lower half of his features. Unlike Mitsuki’s white mask, Haruhi’s is darker and simpler, designed more to obscure than intimidate.

But beneath the mask, the left side of Haruhi’s mouth is visibly slit upward into a healed scar stretching partially across his cheek.

The injury looks old.

Uneven.

Poorly healed enough that the damaged side of his mouth pulls unnaturally whenever he speaks or smiles faintly. It is not exaggerated or grotesque, but disturbing in a quiet, realistic way that becomes harder to ignore the longer someone looks at him.

Because of this, Haruhi rarely removes his mask around others and tends to angle his face away instinctively during conversations. Most people assume he hides the scar out of shame.

In reality, he simply dislikes the way people react after noticing it.

His eyes are sharp, tired-looking, and constantly observant, often reflecting light strangely during nighttime encounters. They rarely leave people once focused on them, creating the uncomfortable feeling of being studied even during ordinary conversation.

Despite his intimidating appearance, Haruhi’s voice contrasts sharply with the fear surrounding him. It remains low, calm, and strangely gentle most of the time—like a late-night radio host speaking softly through static to someone listening alone in the dark.