Izumi's younger sister who was also hired by Yoshitaka to become one of his maids, Mitsuki is an industrious young girl who, with the help of Yoshitaka's media archive, makes her older sister a "Net Idol". Izumi's popularity and Mitsuki's hard work, eventually allows Izumi to pay off her debt. Mitsuki also gains popularity and has her own fan club from her school and other schools as well.
Cute cosplay! I really love her expression in this photo. It's a bit similar to Orihime's isn't it? Thanks to Lila2021 for sending this in!