Retsuko's appearance is based on the Red Panda. She has light orange fur on her face, black eyes, white ears, brown legs and arms, and a brown and light orange striped tail. Retsuko is seen in many different outfits throughout the series, but her typical clothing consists of a peach sweater with jewels around the collar and plaid skirt with black Mary Jane shoes. During the winter, Retsuko is usually seen wearing a navy blue pea coat, black skirt, tights and boots, and a peach scarf. Her work apparel is the typical female office uniform: blue vest and skirt, white dress shirt, and brown dress shoes.
When she starts screaming death metal, Retsuko's appearance changes to KISS-inspired makeup, sharper teeth, pointed eyebrows, a split tongue, glowing blue eyes, and the kanji for rage (烈) appears on her forehead. She is usually seen crying or manically laughing while in rage mode.
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 eventually opens up to Gori, Washimi, and Resasuke.
Love Interests Edit
★Resasuke: Retsuko and Resasuke briefly dated, but broke up after Retsuko realized that Resasuke didn't have the capacity to care about her the way she did for him. Resasuke was absentminded and not very attentive, but supportive of Retsuko nonetheless, especially after she revealed her true colors as a death metal singer. However, his response was underwhelming and clearly not appreciative of the meaning behind Retsuko's words, and, whilst he was kind, she realized that she couldn't continue the relationship with him.
★Gori and Washimi: Gori and Retsuko, along with Washimi, attend a yoga class together, as well as working at the same trading firm. Gori is a director in Sales, and Washimi is the secretary for the CEO of the company. Gori and Washimi help Retsuko come out of her shell a bit as a person, continually offering advice, support, and friendship. They were also the first people that Retsuko trusted with her death metal "secret".
★Puko: Retsuko's easygoing, free-spirited friend from high school, and drinking buddy. Puko invited Retsuko to join in on her international goods store, but Retsuko had to decline after finding that it would be based on internet sales and that her current, stable job was more wise. Despite this, Puko comments on how she admires Retsuko's responsibility, even going as far as to say that the reason she can be so carefree is because of hardworking people like Retsuko.
★Haida: One of Retsuko's coworkers, who cares for Retsuko deeply, although she was apparently unaware of this until recently. Fenneko acted as Haida's wing man, both in helping Haida come to terms with his feelings for Retsuko, and ensuring Retsuko didn't end up with anyone else. Despite Fenneko failing miserably at the latter, Haida took Retsuko's new relationship with stride and blamed only himself for taking too long to confess his feelings.
★Fenneko: An accountant alongside Retsuko, Fenneko is cunning and intuitive, able to deduce much about her coworkers lives through social media. She despises Tsunoda, and expressed extreme suspicion of Retsuko when Tsunoda posted a selfie of them both, but nonetheless cares for and is even protective over Retsuko (as shown when she attended the single's mixer as Retsuko's "bodyguard").