Himiko Agari attends Itan Private High School, starting in Class 1-1 as a first-year and progressing to Class 3-5 by her third year. She stands 156 cm tall with dark green hair and eyes, usually wears glasses, and possesses a notably curvier figure than her peers. Born on April 30 with blood type B, Agari suffers from extreme social anxiety. Interactions trigger intense physical reactions: her face flushes crimson, she convulses, hyperventilates, breaks into cold sweats, and experiences stomach pains. This condition originally forced her to hide in bathroom stalls during lunch and avoid people. Her name incorporates wordplay on "agari-shou" (stage fright) and "hikyou" (cowardice), mirroring her anxiety. Her personality includes a self-deprecating and masochistic streak, especially around Komi Shouko. Convinced she is unworthy of equal friendship, she asks to be Komi’s "dog" or subservient companion, showcasing her profound lack of self-esteem. This dynamic softens as she gradually accepts a standard friendship role. Remarkably, her anxiety vanishes when discussing food, particularly ramen. Using the online alias "Ramen is My Staple," she pens influential reviews for "Gurunabe" capable of dramatically increasing a restaurant's popularity. During these culinary discussions, she speaks fluently, confidently, and without a stutter. Agari participates in school committees, serving on the Library Committee and in the Newspaper, Library, and Literature Club. During library study sessions, she enforces silence as part of the "Library Committee Slap Team," wielding a paper fan to maintain order. Academically, she ranked 7th in the 24th summer term finals. She endured bullying in middle school where peers cruelly nicknamed her "meatball" due to her body shape, causing lasting self-consciousness. Her family includes an aunt, Matsuri Agari, who shares similar shyness traits. Agari progressively overcomes aspects of her anxiety. On a school trip to Kyoto, she displays newfound body confidence by undressing in a public bathhouse despite prior shame about her physique. She also proposes a Whack-a-Mole booth for the cultural festival, partly motivated by a desire for Komi to interact with her physically. Her journey moves from isolation to forming meaningful bonds within Komi’s friend group, where she is listed as Komi’s second friend. Trivia notes her favorite foods include tomatoes, avocadoes, and white rice. She belongs to the "Purity in Student Relationships Committee" and ranked 19th in a character popularity poll.