Takumi Watanabe, known by the nickname "Watabe," heads his school's manga club as its only initial member. He demonstrates considerable artistic skill but fixates entirely on drawing stereotypical bishōjo-style characters, an obsession that occasionally surfaces as socially unconventional or unsettling behavior. Takumi actively avoids depicting male characters, implying both disinterest and potentially limited ability in rendering them. His artwork frequently features Mika Suzuki, the homeroom teacher, as a subject. This shared interest in Mika creates a point of connection with Rio Kitagawa, leading to camaraderie between them.

Chinatsu Nakayama, a female student who idolizes Takumi, joins the manga club despite her own lack of artistic talent. She develops a significant romantic crush on him. Takumi appears aware of her feelings but consistently uses subtle tactics to deflect her advances, maintaining distance without direct confrontation. His personality and artistic focus remain consistent throughout the series, with no significant alterations or background provided beyond his role in the club and interactions with these classmates.