Menma is a girl who suddenly appears several years after her death to Jinta and asks him to reunite their group of friends so her wish can be granted. Yet, she does not seem to remember what is her wish, but she knows she has to reunite her friends in order to remember. Despite being "dead", she is a very positive, energetic and lively person. According to Jinta, she is quite selfless and cries very often for others when they are hurt or upset, but not for herself. Jinta calls her "the beast of the summer" as he relates her to being a manifestation of his stress instead of a ghost girl.

Inaho is a young boy of average height and short tousled black hair. His eyes hold a burgundy color and he has a blank gaze. He is seen in his high school standard uniform which consists of a white shirt, red tie and white sweater, along with a light brown blazer on the outside and black pants. His backpack is dark blue. Inaho is a calm, intelligent boy. Even at times of great distress, he calmly thinks of a way out. He is intuitive and not afraid to go on many different tactics to analyze the opponents and figure out the suitable strategy. Inaho's parents died sometime prior to the war and he lived alone with his sister. Waking up, cooking breakfast for his sister, he leaves for his school in Shinawara. He, along with his friends, attended the parade where the princess was killed by a missile attack. Shortly after, the Orbital Knights declared war on the Terrans and invaded Earth. Inaho's daily life was shattered because of the attack. (Source: Aldnoah.Zero Wikia)