Paranoia spreads like a disease, as a boy on golden skates, dubbed "Lil' Slugger", gains fame through being a hit-and-run assailant. The story all starts from Tsukiko Sagi, who is the first victim of the assailant. The attacks then continue, and two detectives- Keiichi Ikari and Mitsuhiro Maniwa investigate the cases to find that there are things much deeper going on throughout the city.
Maromi is a mascot created by Tsukiko Sagi and her most famous character. Maromi is a small pink dog, which has been made into many forms of merchandise, including plushies, pillows, balloons, and even a television show.