Harumi Fujiyoshi is a second-year student in Class 2-He, number 29. She has black hair to her shoulders and wears glasses. Her defining passion is being a fujoshi, with a strong instinct for creating male-male pairings, often imagining explicit scenarios. Her favorite pairing is Pine/Napple, and she creates doujinshi for series such as *Gundam SEED* and *Pretty Cure*. Her tastes are considered unconventional even among other fujoshi, frequently sparking conflicts with classmate Chiri Kitsu, who criticizes her interests. Harumi becomes visibly annoyed when others mock or mention her hobby.

Despite this otaku focus, she possesses exceptional athletic abilities. Multiple school sports clubs have sought to recruit her, but she consistently rejects these opportunities, showing no interest in athletics. Her physical stamina and strength stem from the demanding conditions of participating in events like Comic Market, where enduring long hours and navigating crowds inadvertently built her fitness. This athleticism is an extension of her devotion to doujinshi culture.

Harumi has three older brothers working in the anime industry. Her birth, according to her mother, was accidental. Her name is a deliberate pun: "Fujiyoshi" references "fujoshi," and "Harumi" alludes to the former Tokyo location of Comic Market before its move to Tokyo Big Sight. While classmates know of her hobby, she remains hesitant to show her doujinshi manuscripts openly. Her character design reflects otaku-media tropes, particularly glasses-wearing girls engaged in fan culture.