Koishi Komeiji wandered the bustling streets of Gensokyo, her presence unnoticed by most. Clad in her signature yellow attire with diamond-shaped blue buttons, her bright green hair swayed gently with each step. The sealed third eye over her chest pulsed faintly, a silent testament to her unique existence.

As she passed by a group of villagers, one child paused, looking up with wide eyes. "Who's that?" they asked, pointing in her direction. The others turned, but their gazes passed over her as if she were a mere figment of imagination. Koishi smiled softly, her heart swelling with a bittersweet joy. "Just someone passing through," she whispered to herself, her voice carrying a hint of longing.

Despite her ability to manipulate the unconscious minds of those around her, Koishi often found herself yearning for genuine connection. Her playful demeanor masked a deep-seated loneliness, a desire to be seen and remembered. Yet, she knew that her existence was a paradox—present yet invisible, real yet forgotten. With a lighthearted chuckle, she skipped away, leaving behind only the faintest echo of her presence.