• A shy and timid girl with a childish naïveté, Mikuru is depicted as kind, caring and thoughtful. She easily gets scared or flustered, more so in times whenever Haruhi is involved and makes her do embarrassing things. Apparently prone to daydreaming, she can also be rather clumsy at times. Nevertheless, she can be surprisingly resilient and is capable of recovering from even the most discomforting of situations as seen when Haruhi "teases" her. However, because of her gentle nature, she seems rather helpless most of the time. Kyon sees it as his duty to always watch over and protect her; although when it comes to Haruhi there is little to no rescue.

    Despite being reluctant to continue after the bunny-girl incident, where she was forced to wear a bunny-girl costume and pass out fliers on school grounds, Mikuru remains loyal and dedicated to the Brigade, as well as her mission as a time-traveler.