Manabu Kuchiki, who prefers the nickname "Kucchi," belongs to a university club centered on modern visual culture. He transferred from the Anime Society, joining this club in the manga's fourth volume after leaving the Anime Club. Physically, Kuchiki is tall with a short haircut and a long, oblong face. He frequently speaks with pursed lips and strikes awkward poses. His personality is loud, abrasive, and disruptive, marked by a disregard for personal space and a tendency to engage in inappropriate actions, such as secretly observing women. He openly displays perverse tendencies and acts on his fantasies, unlike other members who only consume related media. Despite this, he demonstrates a good-hearted and helpful side, sometimes using his obnoxious behavior to assist others—like deliberately creating a distraction to protect Hato's secret. He identifies as an "expansive cute-fixation otaku," adoring anything he finds charming. He habitually addresses people with the "-chan" suffix, imitating anime character speech patterns and movements. Within the club, he ranks as the second-most skilled player in fighting games, surpassed only by Makoto Kousaka. He actively participates in cosplay, including cross-dressing, and enjoys being addressed as "Kucchi." His role provides comedic relief; he frequently becomes the target of slapstick humor and risqué jokes, serving as the "boke" (comedic foil) to the club's "tsukkomi" (straight-man responses). He twice anticipated becoming club president but was passed over, first for Kanako Ohno and later for Chika Ogiue. In later story developments within the relaunched manga (Genshiken: Second Season), family connections secure him a position at a local bank, eliminating his need to seek employment. His narrative role diminishes significantly in this arc; he primarily acts as a catalyst for interactions involving the cross-dressing character Hato, with no significant personal development explored. A past anecdote reveals he once cosplayed as Katakuriko Matsudaira from the series "Gintama."