; : :The main character, Naoyuki is usually a relatively quiet boy who spends time with his close friends most of the time. His parents own a hair salon, and Naoyuki himself is able to cut hair. A member of the school newspaper club, he spent the previous summer keeping a watch out for UFOs near a local military base with the club's chairman for company. At the beginning of the school year, he meets the new transfer student, Kana Iriya, and quickly forms a crush on her. Naoyuki usually tries his best to be assertive when needed, but is also very sensitive and cries several times throughout the series. ; : :Kana is a very mysterious girl who transfers into Naoyuki's class at the beginning of the school term at the end of the summer vacation. She tends to have very little social skills and rarely talks to anyone. In effect, most of her classmates dislike her rude attitude and avoid her most of the time. The truth is, however, that she is humanity's last hope at defeating alien invaders from completely annihilating the human race. To save mankind, she is forced to pilot the "Black Manta", a super advanced fighter jet with astounding maneuverability, with which she often fights the invaders. However, by flying the Black Manta, Iriya's mind and body are constantly under incredible strain causing her to often bleed frequently, especially from her nose. Soon after meeting Naoyuki at school, she quickly develops a
crush on him and because of this, she joins the school newspaper club to be with him. She places various objects in his footlocker on the days that she is present at school. ; : :Akiho is one of Naoyuki's classmates and has known Asaba long enough to have developed a crush on him. At first, she dislikes Kana and excludes her from club activities, but after an eating contest where they both overeat and get sick they finally become friends. ; : :He is the chairman of the
Sonohara Wave Press otherwise known as is the school newspaper club. He is always filled with energy and is very loud because of it. He refers to the other members of the club as "Special Correspondents" and often gets very in to his work. Also, he is relatively knowledgeable about computers as once he was able to listen in on Naoyuki's and Kana's conversation when they were on a date together. In the novels, it is mentioned that he is actually quite good in both studies and sports; his record for running the 100 meter dash is eleven seconds. ; : :Supposedly Kana's older brother, he is an older man who is more or less in charge of Kana and is very protective of her. Usually he tends to be a very care-free type of person, though can sometimes be driven to be very violent, especially when Kana is concerned. ; : :She is Enomoto's colleague, who is also connected with protecting Kana at all costs. She impersonates the school nurse at Naoyuki's school in order to keep an eye on Kana, though she really does seem to have some knowledge about medicine. Also, she can be a very violent person and once brutally fought with Naoyuki after they had a talk about Kana.
Mayumi Shiina is not her real name, which remains unknown; the initials of her true name, as seen in her letter to Naoyuki, is "T.S.". ; : :Naoyuki's younger sister who is in junior high school. She tends to be very loud and annoying to her older brother and does not back down easily. When Naoyuki went on a
date with Kana, Yūko ended up following and spying on them, which is probably because she was interested in finding out who Kana was. After the spying, she got into a fight with Suizenji. ; : :Naoyuki's classmate, who often hangs out with him. ; : :Naoyuki's homeroom teacher. ==Media==