Hifumi is a especially shy girl to the point of avoiding talking to people or looking at them directly. As a result, in order to not make her feel uncomfortable, the other employees interact with her through the company's computer messenger system. Contrary to her normal personality, she becomes very lively, outgoing, and cheerful while texting or messaging, often using emoticons in chat. Hifumi is a quite pale-skinned girl (due to being inside working all the time) with waist-length brown hair