Megumi Jinno is the class representative in Sagiri Izumi's middle school class. A former amateur model who now prioritizes her student leadership role, she possesses strong social abilities, befriending her entire grade level and organizing class activities. Exceptionally beautiful, she often appears more mature than her actual age of 12-13 years. Her appearance features wavy ginger hair tied in a ponytail with a purple and pink scrunchie, golden eyes, and a height of 140 cm. She wears the standard white and navy school uniform with a yellow bow, a pleated skirt, black knee socks, and brown shoes. Her personality is cheerful, sociable, and perceptive, exhibiting an intensely positive aura Masamune Izumi describes as a "Holy Attribute." She displays flirtatious behavior, making intentionally shocking statements like declaring "I love penises!" or claiming to be a "dick-loving bitch," an act meant to appear cooler and more experienced. In reality, she lacks genuine knowledge or experience in relationships; her only exposure to male anatomy comes from her younger brother. This facade cracks when confronted with actual sexual topics, causing discomfort or tears. She also practices deception by presenting herself as more innocent than her overt persona. Key relationships define her actions. As class rep, she persistently attempts to get Sagiri to attend school, visiting the Izumi residence unannounced. She tries various strategies to befriend Sagiri, including flirting with Masamune to provoke jealousy. With Masamune, she acts familiarly upon first meeting, questions why he doesn't fall for her, and mutters insults when rejected. Her motivations for pursuing these connections remain unclear beyond a stated desire for friendship. Through Tomoe Takasago, she evolves from dismissing light novels as "gross geek books" to becoming an enthusiastic fan after receiving recommendations. Significant developments include her self-driven character growth. She independently deduces Sagiri's secret identity as the illustrator Eromanga Sensei, a turning point in their relationship. Her leadership skills enable her to mobilize classmates for group initiatives, such as collectively encouraging Sagiri to attend school. Gradually, despite her initial act, she reveals genuine aspects of her personality through these interactions. Her background includes a birthday of June 15th (Gemini) and blood type B. The etymology of her name suggests possible meanings of "favor, benefit" or "love, affection" for Megumi, while her surname Jinno combines "god, deity" and "field, wilderness."