The Nendoroid Onii-chan wa Oshimai! Mahiro Oyama figure from the anime series 'ONIMAI: I'm Now Your Sister!' features the 'former' older brother Mahiro Oyama in a cute and posable form. The figure comes with various face plates including a blushing face, crying face, and smiling face to capture different expressions. Additional optional parts such as a game controller, plushie, and other accessories allow for different poses and customization. The pre-painted posable figure stands at approximately 100mm in height and is made of high-quality plastic materials.

Mahiro Oyama, the 'former' older brother in the anime series 'ONIMAI: I'm Now Your Sister!', finds himself in unexpected situations that lead to comedic and heartwarming moments with his new sister. Despite his initial shock and confusion, Mahiro shows a caring and protective side towards his sister, making him a lovable character with a mix of vulnerability and strength. His interactions with the other characters in the series add depth to his personality and contribute to the overall charm of the story.