Katsunori Urawa, a classmate and close friend of protagonist Keisuke Saji, possesses a tall, lanky frame complemented by messy brown or black hair and glasses, reinforcing his intelligent, bookish demeanor. He is often immersed in studies or seen carrying books. Despite introverted leanings, Urawa wields a dry wit and sarcastic humor, skillfully deploying it to ease tensions. His fierce loyalty manifests through unwavering support and advice for friends. Alongside Susumu Kuwabara, he comprises one of "Those Two Guys" who actively champion Saji's romantic endeavors, especially concerning Akira Koizumi; both share an enthusiastic interest in girls and relish discussing romance. Urawa works part-time delivering pizza. Generally level-headed, he occasionally engages in flirtatious but harmless banter with girls in their circle. Throughout the series, he remains a steadfast secondary character, functioning as a reliable sounding board and supportive figure for Saji's personal struggles.