Nichika Nanakusa is described as "everyone's little sister" with a strong spirit and adept at getting people to spoil her. She has a strong admiration for idols, and would sometimes show off a competitive side that refuses any sort of compromise. She’s in her first year of high school and works part-time at a record store.
She is energetic and passionate with a bit of a cheeky (sometimes to the point of being rude) side, but otherwise pretty ordinary in terms of talent. She's a huge fan of idols, and wants to be just as good as her favorite idol, Nami Yakumo, who released one song and disappeared. However, Nichika has a hidden side that struggles a lot with anxiety and low confidence. Later in her route, she states that she only successfully became an idol and gained fans because she "got lucky", and she's concerned her luck will run out.
She is Hazuki Nanakusa's little sister, who said she could be an idol as long as she won WING.
