ONA
Description
Fenneko is a supporting character who works as an office employee at the same trading firm as her close colleague, Retsuko. Her appearance is based on a fennec fox, featuring light fawn fur with a distinctive darker stripe running down her forehead, large ears, and a short stature. In a professional setting, she wears a standard navy blue vest and skirt with a white dress shirt, while outside of work she often dresses casually in items like a baby blue turtleneck sweater and gray skirt.

Fenneko is defined by her quiet, perceptive, and highly analytical personality. She possesses a sharp ability to read the mannerisms and emotions of those around her, often deducing what her co-workers are thinking with unsettling accuracy. Her demeanor is typically aloof and unemotional, and she speaks in a signature monotone, complemented by a stiff, robotic laugh that contrasts with her normal laugh when she is drunk. Despite her reserved exterior, she is deeply opinionated and does not shy away from voicing critical or blunt truths, even to her friends. For instance, she has directly told her friend Haida to move on from his unrequited love for Retsuko. While she is often cynical and skeptical, she has a notable tendency to vocally reject new activities or trends, such as group dates or virtual reality games, only to become secretly addicted to them once she tries them.

Fenneko’s primary role in the story is as Retsuko’s closest confidante and a key observer of the office drama. She is a self-proclaimed professional at stalking social media, using her skills to monitor the online activities of her co-workers and uncover secrets, which she often uses to either mock them or to gather intelligence. Her motivations stem from a genuine, if sarcastic, care for her friends and a desire to understand the often frustrating social dynamics of adult working life. She finds humor in embarrassing situations and is rightfully angered by how the higher-ups mistreat Retsuko.

Key relationships define her interactions. Her friendship with Retsuko is central; although they do not share many obvious interests, they became close due to sitting next to each other at work and bonding over shared grievances. Fenneko acts as a supportive, if harsh, ally to Retsuko during times of crisis. Another significant relationship is with Haida, who is both a close friend and drinking buddy. For a long time, Fenneko was the only person who knew about Haida's crush on Retsuko, and she initially acted as his wingwoman, though her support waned after Retsuko rejected him. Her relationship with co-worker Tsunoda is characterized by mutual dislike, as the two have opposing personalities and values, though they occasionally tolerate each other for Retsuko's sake. She also forms a bond with the character Shikabane after meeting her in an online video game while trying to track down Haida.

Throughout the series, Fenneko shows subtle development. While she remains perceptive and cynical, her capacity for genuine empathy and support for her friends becomes more apparent. She actively works to bring Haida and Retsuko together in later seasons, demonstrating that her blunt exterior masks a desire to see her friends happy. Her notable abilities include her exceptional internet savvy, her skill in analyzing behavior and social media posts to uncover hidden truths, and her ability to remain composed and logical in emotionally charged office situations.