Retsuko

Retsuko (烈子, lit. meaning fierce child) is a 25-year-old metalhead office worker and the protagonist of the Aggretsuko series. Retsuko's appearance is based on the Red Panda.

The series centers around Retsuko's day-to-day life as an accountant and her relationships with her coworkers. "Retsu" (烈) means "fury" or "rage."

In her daily life, Retsuko is a demure, softly-spoken and polite young woman who works diligently, often being the only person to work overtime - usually, because her bosses drop their work on her desk to leave on time. She is kind and a slightly rigid, although, when drunk, she loses all mental filters and speaks her mind.

Internally, however, Retsuko has a vicious temper, which she curbs by renting a karaoke room and screaming her lungs out to death metal. She's a very talented singer in this respect, usually venting about her work, social, or romantic life. She's timid in showing others this side of her but gives in to Gori and Washimi when they beg her, and she later shows Resasuke.

Exposed (S1E5)
During yoga class, Retsuko flexes her arm and sees she has grown a little bicep.