Mika Nogizaka  

, 乃木坂 美夏

Mika is a 16 year old girl who enjoys playing the violin and squash in her free time. While Haruka, her older sister, is naive, Mika has a more mature personality. She likes spending time with Yuuto and often refers to him as "onii-san." However, when Haruka is around, Mika enjoys teasing them playfully. In contrast to Harukas lack of knowledge about sex, Mika is more informed but may still be taken aback by H-rated content. Additionally, she has a fear of ghosts that even her younger age hasn't diminished.