Koharu Konjiki is a third-year student at Shitenhoji Middle School who serves as the treasurer of the student council and is a regular on the tennis team. He possesses an IQ of 200 and is well known for having an extensive internal database of tennis data and player information, a capacity that is often remarked upon as surpassing even that of Seigaku’s Sadaharu Inui. His physical appearance is highly distinctive, featuring a shaved head and glasses. Personality wise, Konjiki is deeply flamboyant and eccentric. He speaks in a melodramatic, lilting tone, frequently punctuating his sentences with heart symbols and playful exclamations, and he has a pronounced affection for cute idols, romantic ideals, and the color pink. His main hobby is collecting material for manzai comedy routines, and he regularly performs comedy acts with his teammates. These personality traits directly inform his tennis style. He primarily uses IQ Tennis, a data-driven method of analyzing opponents and predicting their actions to counter their shots accurately. In doubles, he and his partner Yuuji Hitouji perform what is known as Comedy Tennis, a unique style that incorporates their pre-planned gag routines directly into the flow of the match in order to disrupt the concentration of their opponents. The pair are collectively known as Naniwa's Baka Couple for their eccentric antics. His motivations are an intrinsic blend of intellectual curiosity and a desire to entertain, treating the tennis court as a stage where he can showcase both his genius-level intellect and his flair for comedy. In the OVA Another Story - Kako to Mirai no Message, Konjiki appears as a supporting member of the Shitenhoji team, participating in the joint training session hosted for Seigaku in Osaka. His role highlights his dynamic with Hitouji and his function as both a source of comic relief and a formidable data analyst within the team.