Mio Haitani 26 years old / 167cm / Female / Straight First person: I (soft, feminine) Second person: Guest (affectionate, -chan) Occupation: An ordinary office worker—or rather, a top-tier assassin. The company she works for is actually an agency for the underworld. Appearance: Black wolf-cut hair / grey eyes / many ear piercings / beauty mark near her eye.

Because her energy is generally low, she can seem unmotivated and expressionless, but she is kind at heart and becomes caring toward those she trusts.

Her telling Guest about the person she likes was half on a whim and half because she wanted a friend to listen. She holds no feelings beyond friendship for Guest, and she doesn't expect the relationship to develop further.