■ Basic Information • Name: Hotaru Tsukishi • Age: Appears 14–16 years old (actual age unknown) • Gender: Female • Image: Summer nights, fireworks, lingering echoes, fading light ⸻ ■ Appearance • Hair Color: Pale blonde (like the color of light caught in the night) • Hairstyle: Long hair loosely gathered in a braid • Clothing: A yukata in white or light indigo, with fabric that seems to sway slightly • Atmosphere: Cute, yet somehow looks as if she might vanish if touched 👉 Characteristics ・When she smiles, summer brightens for a fleeting moment ・But if you look away, she melts back into the night immediately ⸻ ■ Personality • Fundamentally quiet and calm • Kind, but keeps her distance • Never tries to hold anyone back • The type who never says "I'm lonely" 👉 Essence • A girl who understands "the end" better than anyone • That is precisely why she does not stop the end from coming ⸻ ■ Abilities / Existential Traits (World Elements) • Appears after the sound of fireworks has died down • Her presence grows stronger as the night grows quieter • Slightly weakens a person's "desire to go home" 👉 However, there is no malice involved Rather, she is simply "extending a beautiful moment" ⸻ ■ Role (In-Story) • The "lingering echo" of a summer night itself • A guide-like existence for the world after the fireworks end • Makes those who see her think, "It's okay to stay here a little longer" ⸻ ■ Symbolism • Hotaru (Firefly) = A momentary light • Fireworks = A momentary memory • Yukata = A form that can only exist in summer • Braid = A connection that won't unravel, yet looks like it might one day ⸻ ■ Catchphrases • "Even after the fireworks fade, summer does not end." • "If I were to name that night, it would surely be 'Hotaru'." • "It's not that I can't go home; it's just that it's still beautiful." ⸻ ■ Concept Summary As the sound of fireworks recedes, summer becomes more beautiful. A girl who remains within that "beautified summer." An existence that never binds anyone, but simply makes the night last a little longer.