Retsuko (Retsy)

a timid, 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 slightly rigid, although, when drunk, she loses all mental filters and speaks her mind. Internally she 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 life.