This 1/9 scale figure of Oyama Mahiro captures the bright energy and contrasting charm of the character from Onii-chan wa Oshimai!. The statue presents Mahiro in a dynamic pose, with one leg slightly bent and a confident stance, conveying her playful, determined personality. The sculpting highlights her short hair with subtle strands and a clean, expressive face that reflects her spirited demeanor. The costume blends stylish contemporary elements with the series’ distinctive color palette, featuring crisp lines, carefully painted accessories, and light shading that brings depth to the folds of her outfit. The base complements the figure with a minimal, glossy finish that keeps the focus on the character, while adding stability. Fine detailing on the tiny accessories and realistic skin tones enhance the overall premium look.

Oyama Mahiro is the central character of Onii-chan wa Oshimai!, a story driven by identity, transformation, and everyday comedy. After an unusual magical incident, Mahiro finds her world turned upside down as she transitions from a familiar male persona to a younger-looking feminine version, navigating school, friendships, and family dynamics in a new light. The narrative follows her adaptability, resilience, and curiosity as she learns to express herself, cope with awkward moments, and discover genuine connections with those around her. Throughout the series, Mahiro's wit and determination help her face awkward misunderstandings, social expectations, and the strange situations that arise from living in two identities. This figure honors that duality, capturing a moment of resolve and charm that defines her evolving character trajectory.