TV-Series
Description
Jinko Komori is a supporting character who appears from the very beginning of the story as one of Kotoko Aihara's closest and most loyal friends. As a student, she attends Tonan High School and later Tonan University, where she is a member of Class F, the group of students with lower academic standing. Her background is that of a typical student navigating the social and academic pressures of school life, often alongside her two lifelong best friends, Kotoko and Satomi Ishikawa.

Jinko has a distinctive appearance described as petite and curvy with beige skin, a wide rounded face, and downturned brown eyes. She has long, straight brown hair that she typically wears loose with a messy fringe, and her eyebrows are thick and rounded. One of her most noticeable features is her defined, thick, and colored lips, which set her apart from many other characters in the series. Her eyes sometimes appear as simple black dots during moments of intense shock or emotion.

In terms of personality, Jinko is a steadfast and supportive friend, demonstrating loyalty, honesty, kindness, generosity, and humility throughout the story. She proves her thoughtfulness when she prepares a homecoming party for Kotoko and her father, and when she gives a gift to Naoki Irie to express her gratitude for his tutoring assistance. Despite these positive traits, Jinko is also highly sensitive and experiences emotions intensely. This sensitivity is particularly evident in her reaction to gossip that mocks Class F students, as she worries deeply that her past academic struggles will follow her and continue to be a source of shame and mockery in her life.

This sensitivity directly fuels her primary motivation, which is a strong desire for self-improvement. She does not want to be defined by her low academic past and wishes to better herself, likely to avoid the ridicule she fears and to build a more secure future. Her role in the story is primarily that of a supportive friend to the protagonist, Kotoko, offering companionship, comfort, and a sense of normalcy amidst Kotoko's more chaotic romantic pursuits. She is often present during key events, such as comforting Kotoko after her initial rejection by Naoki and visiting her at her new home.

Regarding key relationships, Jinko is best friends with both Kotoko Aihara and Satomi Ishikawa, forming a close trio that remains together through their school years. Her most significant personal relationship is with Junpei Narasaki, who becomes her boyfriend. Her development throughout the series is tied to her growth from a student in Class F who is insecure about her academic abilities into someone who actively seeks to improve herself and build a life beyond the labels of high school. In terms of notable abilities, Jinko does not possess any extraordinary skills or talents highlighted in the source material; her strengths are her loyalty, kindness, and the supportive role she plays within her circle of friends.