Miho Amakata teaches classical literature and serves as homeroom instructor for Haruka Nanase and Makoto Tachibana at Iwatobi High School. Students affectionately call her "Ama-chan" for her approachable nature. Standing 165 cm tall, she has medium-length, slightly wavy brown hair and brown eyes. Her typical attire includes a white shirt featuring blue or pink neckline detailing, a loose cardigan in green or peach, blue jeans, white shoes, and a necklace. She avoids sun exposure, frequently using a parasol outdoors. Her personality blends intelligence and quirkiness with distinct social awkwardness. She habitually references classical literature, though her quotes often seem disconnected from the context. Described by Makoto Tachibana as "a little strange," she displays girlish tendencies, enjoys pink accessories, and drives a pink car. She becomes visibly nervous when directly questioned or when making eye contact. Despite these quirks, she shows caring support for her students. Prior to teaching, she pursued an unsuccessful career in swimwear design. During this time, she worked as a swimsuit model under the stage name "Marin Nishikujo" (also noted as "Marin-chan"), appearing in publications like *Weekly Young Shock*. This past remains a closely guarded secret that agitates her when mentioned. She vows never to wear a swimsuit again and avoids poolside areas. Initially hesitant to advise the swim club, she relents after persistent requests from Haruka, Makoto, and Nagisa Hazuki. Her conditions include recruiting two additional members and cleaning the abandoned pool. She diligently fulfills her advisory role, attending training camps and competitions while supporting members such as Rei Ryugazaki and Gou Matsuoka. She continues advising the club even after Haruka and Makoto graduate. Her background involves growing up locally, attending college in Tokyo, and returning home after her design career faltered. Rumors among students about her swimwear-related past initially motivate the swim club's request for her advisorship. Her modeling history surfaces in episode 10, prompting student surprise. She maintains a distinct role from students despite her approachability. As a non-athletic individual, she provides unconventional guidance through literary references rather than technical coaching. Her development across the series remains consistent, centered on supporting the swim club while reconciling with her past. She embodies the "Sensei-chan" archetype—a young, relatable teacher navigating her role while retaining personal idiosyncrasies.