This figure of Oyama Mihari from Onii-chan wa Oshimai! stands in a lively pose that captures her bright, mischievous energy. The character is rendered in fine detail at 1/8 scale, featuring a dynamic stance with one leg forward as if stepping into an action from the series. Her hair is sculpted with flowing strands and a playful bow, while her outfit combines school-style elements with fantasy accents—soft folds, subtle textures on the fabric, and carefully painted trims that highlight the character's cheerful personality. The face expression is characterized by a wide smile and eager eyes, conveying Mihari's courageous and bubbly nature. The included base is themed to echo the world of the show, with clean lines and a stable support to emphasize movement rather than stillness. The overall aesthetic is faithful to the character and designed to appeal to collectors who enjoy detailed, poseable display pieces.

In the world of Onii-chan wa Oshimai!, Mihari Oyama is a spirited and kindhearted sister whose life is touched by a magical transformation that complicates her everyday routine. Her adventurous energy pushes her to face strange creatures, unexpected spells, and the dynamics of family and friendship. Mihari's optimism helps others see the humor in awkward situations, and her willingness to try new things drives the story forward. The character's development emphasizes resilience, playful mischief, and the bond with her brother as they navigate the consequences of magic, miscommunication, and growth. This figure aims to evoke Mihari's approachable charm and her role as a beacon of light in the series, balancing whimsy with warmth.