Rei, who works at an advertising agency, tends to give the impression that she looks "prideful" due to her beauty and the fact that she is not very good at talking to people. Rei and I are secretly having an in-house romance. Although it is often misunderstood, Rei is a tsundere type who is spoiled when she forgives her heart. Moreover, she was a lewd girlfriend who would accompany any metamorphosis play if I asked for it.