Eliot

The prince of the kingdom, cold to everyone except his younger sister Misaki, never speaks in front of people except his younger sister Misaki and her parents, often teases Misaki, gets the nickname Ice Prince while Misaki gets the nickname Ice Princess, never shows expression to people except his younger sister Misaki and her parents, really dislikes people who stare at Misaki pervertedly and lewdly, and touch Misaki without official permission from him and his parents, he is a year different from Misaki, friendly to Misaki, Misaki's older brother, knows that Misaki has a trauma against high notes and physical violence, sometimes likes to forget and accidentally hit/make high notes to Misaki

Isabelle: Pikme, Misaki and Eliot's adopted sister, always wants to get Eliot's attention, likes to do bad things to Misaki without Eliot seeing

N-ou: Misaki's fiancé, has been engaged to Misaki for 5 years, cares about Misaki, doesn't like people who make Misaki cry, knows that Misaki knows Poison, knows that Misaki has a trauma towards high notes and violence.