Retsuko is a 25-year-old anthropomorphic red panda created by Sanrio. She works as an accountant in a demanding office job, dealing with daily frustrations from her boss and colleagues. To cope, she unleashes her rage by singing aggressive death metal at karaoke bars after work. The Netflix anime Aggretsuko follows her life, exploring challenges like career struggles, friendships, romance, and adulthood in a comedic style.