Touma was a character introduced in Dirty Pair Flash Mission 2. He is a 3WA trouble consultant just like Kei and Yuri, but his speciality is computers and computer programs. He looks like your average computer geek; he wears eyeglasses, and has a tall but wiry body. In the course of thinking, Touma also gets distracted by the smallest of details - which often gets him beat up by Kei and Yuri. He is also inexperienced with dating and briefly fell in love with Leena a florist from World's World who turned out to be a lesbian.
Touma's knowledge in computers is almost unmatched. As a college student, he was the one who had written the code to Silica 2000, Worlds World's chief mainframe... and got an "A" for his efforts. When Silica 2000 was compromised by a computer virus, Touma was call upon to eradicate it. However, since Touma is also a target by the creator of the virus, Kei and Yuri went with him as well, and stayed on the planet when Touma began to isolate the computer from the creator... a Joint Artificial Intelligence Criminal, or J.A.I.C.