Standing heroically, Dazai Osamu is sculpted in a sharp, tailored black suit with a slim tie and crisp white shirt. The Harmonia Humming design captures the character's signature calm, almost playful expression, with precisely painted eyes and subtle gloss on the hair. A cigarette dangles from his lips, smoke curling in delicate wisps around a poised hand, while the flowing coat behind him conveys movement and elegance. The figure is posed with one hand tucked in his pocket and the other slightly extended, as if ready to unleash a clever plan. The finish emphasizes the contrast between the dark attire and pale complexion, with precise shading along the lapels, cuffs, and creases of the fabric. Stands firmly on a stable base, ensuring a clean display from all angles.

Osamu Dazai is a brilliant but enigmatic detective from Bungou Stray Dogs, known for his carefree demeanor and deadly intellect. Once a high-ranking operative for the Port Mafia, he now leads with the Armed Detective Agency, using humor and mischief to defuse tension while secretly orchestrating strategies that outwit formidable foes. His special ability, No Longer Human, nullifies the powers of others in his presence, turning battles into a test of wit rather than strength. Across the series he forges fragile alliances, teasing friends like Atsushi with dry quips, while his past hints at a haunted history that shaped his charm and ruthless pragmatism. The character's depth comes from the juxtaposition of cheerful bravado and profound loneliness, making him one of the most compelling figures in Bungou Stray Dogs.