; : : He is the main character of the story. Akira is a very talented computer connoisseur and is known in the hacking world as Battle Programmer Shirase (which is typically shortened to BPS). A genius in computer hacking and security who can do anything on any computer, or phone. ; : : Misao is Akira's great-niece. She is a very shy girl who loves to spend her time with Akira, whom she often refers to as '
. She cares for him deeply and it is very common to see her cooking for him or worrying about him. Sometimes, Misao says ', which does not have an actual meaning (this may be a "cute" form of speech the creators added for her to please fans of cute anime girls). Misao looks very young for a 6th grader. Misao Amano has made a cameo appearance in the final OVA of (
Dual! Parallel Trouble Adventure) and is a main character in the series (
Magical Girl Pretty Sammy) in which her alter ego is
Pixy Misa. ; : : Yoriko, nickname "Yon", is a
child prodigy who works for the
United States Navy. Her rank is
Lieutenant Commander. She first meets BPS (Akira) when he is seen walking home after waiting in front of a book store. He explains that the book store clerk only opens when he wants to. She had been following Misao and asked if she could go to her house. She seems to have the same knowledge of computers as Akira and in one episode asks him to join her in the
National Guard as her partner. She also asks him to go to America with her, and seems to have strong feelings for Akira as well. ; : : Sae is Misao's teacher. In an earlier episode she had tried to get Misao together with a boy from grade class. She is later seen drinking in an alley where she meets Akira, whom she has not seen since high school. She was being forced to have a marriage interview, and since she did not want to go she ended up getting drunk in the alley. ==Music==