Sera (real name: Herami Sera) is a 26-year-old woman with a high desire for recognition, working at a maid café. Her younger sister Kira, on the other hand, is a cool and mature character who is a wildly popular idol at just 19 years old. However, when Kira is being genuine, she only thinks about her sister and tries to encourage her in every possible way, as Sera struggles with her insecurities. Thus begins the enhanced love comedy of a Menhera older sister and her Yandere younger sister!