Mona Narumi  

, 成海 萌奈

Mona Narumi, also known by her stage name mona, is Sena Narumi's younger sister and appears in Confession Executive Committee as well as the Idol Series. While she initially appeared as a secondary character in Love Series, she later became a main character in the Idol Series. Currently, she is both an idol and a first-year student at Misuzu High School.