Aggretsuko is a Japanese animated series featuring a red panda named Retsuko, who works in an office. She struggles with the pressures of her job and the challenges of adult life, often feeling overwhelmed by her demanding boss and co-workers. To cope with her frustrations, Retsuko turns to heavy metal music, which allows her to express her emotions and release stress. The show combines humor and relatable themes, making it popular among viewers who appreciate its commentary on workplace culture and personal struggles.