Mika Nogizaka (乃木坂 美夏 Nogizaka Mika) is the younger sister of Haruka Nogizaka in her second year of junior high school. She has a personality that is exactly opposite her sister, who is naïve. She enjoys Yūto's company and she often calls him "Onii-san" (an affectionate word meaning brother, brother-in-law, or a brother-like male figure). When Haruka is with Yūto, however, Mika likes to tease them. In contrast to her airhead older sister, Mika is very stable. Even at her young age, she is more knowledgeable about sex than Haruka, although she will get shocked or stunned mentally if exposed to H-rated material just like her sister even though she is a very dirty minded girl. She shows some interest in Yūto after their date. She has been running for the student council president of her all girl school for two consecutive years. She is just as much as an idol as her sister at school and she is known by the name "Moonlight Strawberry".