Description
Retsuko is a 25-year-old anthropomorphic red panda working as an accountant at Carrier Man Trading Company. Her name fuses the kanji "retsu" (烈), signifying rage or fervor, and "ko" (子), meaning child, a hint at her inner fury. Professionally, she presents a timid, soft-spoken, and excessively polite facade. This demeanor leads colleagues and superiors, especially the blatantly sexist Director Ton, to overload her with work. She privately channels intense rage through cathartic death metal karaoke sessions. During these performances, her appearance shifts dramatically: she dons corpse paint makeup, reveals sharper teeth and a forked tongue, her eyes glow blue, and the kanji for rage (烈) appears on her forehead. This outlet remains a secret, known initially only to close friends and romantic partners.

Her journey involves navigating societal pressures, notably her mother's persistent expectations for marriage and a conventional life. Early romantic interests include Resasuke, an indifferent colleague unfazed by her death metal secret, and Tadano, an entrepreneurial donkey whose rejection of marriage clashes with her desire for family. Her relationship with Haida, a hyena coworker, evolves from his unrequited feelings to eventual marriage. After initially rejecting his confession due to emotional unreadiness, she gradually acknowledges mutual feelings. Their partnership endures challenges like Haida's involvement in corporate fraud and resulting unemployment, leading to cohabitation. They marry during her Season 5 campaign for political office.

Key friendships support her growth. Fenneko, a cynical fennec fox colleague, provides perceptive insights, though Retsuko often keeps personal struggles from her. Senior colleagues Washimi (a secretary bird) and Gori (a gorilla), met at yoga, become mentors encouraging self-expression and offering stability. Tsunoda, a gazelle initially perceived as insincere, later emerges as a genuine supporter guiding Retsuko through social dynamics. Puko, a free-spirited high school friend, challenges her life choices but respects her dedication.

Her character arc involves embracing her death metal persona publicly. Initially a private release, it becomes integral to her identity: she joins the underground idol group OTMGirls in Season 3, using metal performances to process trauma after a stalker incident. By Season 5, she incorporates metal into her political rallies. Professionally, she shifts from seeking escape through marriage or alternative careers toward valuing self-reliance. After Haida’s father disapproves of their relationship, she asserts her independence, solidifying her partnership with Haida on mutual support rather than dependency.

Family dynamics also shift. Her mother’s domineering pressure for marriage contrasts with her father’s calmer, trusting approach. Initially resistant, Retsuko later understands her mother’s concerns stem from care. By the series conclusion, she balances marriage, career aspirations beyond accounting, and her metal singing as a core aspect of her identity.