Standing figure of Oyama Mahiro from Onii-chan wa Oshimai! captures the charm of the character's playful personality. The figure stands poised on a round, glossy base that hints at the magical elements of the series. Mahiro's long hair is sculpted with natural flow, airy strands framing the face and a couple of stray locks that catch the light. The outfit combines a cute, school-inspired look with subtle fantasy accents: a short sailor-style top, pleated skirt, and knee-high socks, all rendered with crisp lines and soft color gradients. The paintwork emphasizes delicate shading on the skin and hair, with highlights that convey a lively, approachable presence. Articulation is kept to a minimum for a clean display, while the character’s expression radiates mischief and warmth. The figure is designed to be stable on its base, with detailed accessories such as ribbons and accessories that reference key moments from the series. Overall, this Mahiro figure embodies fan-favorite aesthetics and makes a striking addition to any collection.

In Onii-chan wa Oshimai!, the story follows Mahiro Oyama, a young man who meets a magical mishap that turns him into a female version of himself. The transition is both humorous and revealing, as Mahiro navigates social situations, family dynamics, and school life in a body that feels unfamiliar at first. Throughout the series, the character uses wit, patience, and growing self-acceptance to adapt to this new reality, all while maintaining his original temperament and bond with his sister and friends. The plot blends slice-of-life moments with light fantasy, exploring themes of identity, friendship, and the meaning of self-expression. The figure representation aims to honor that evolution by presenting Mahiro in a moment of calm confidence and curiosity, inviting fans to reflect on how appearances shape perception while celebrating the warmth of the story's humor and heart.