Mikuru Asahina, a shy and timid girl with a childish naïveté, is the only character other than Kyon to be brought into the SOS Brigade against her will. She easily gets scared or flustered, and is apparently prone to daydreaming as 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. However, because of her gentle nature she seems rather helpless most of the time.