Mimura is Onee-chan's husband. He is tall with short brown hair, and has a calm personality. Mimura appears in episode 11 of the anime, where he and Sempai go shopping together to find a present for Onee-chan's upcoming birthday. The rest of the Magic Club is initially suspicious when they see Mimura with Sempai, and assume he is her boyfriend. Assistant becomes jealous, and jumps to increasingly more outlandish conclusions before the Magic Club finally learns that Mimura is kind and innocent.