Age (donghua): 18
Age (manhua): 18-21 (over time)
Qin Ya is Qin Ze's twin sister and a top idol singer known for her beauty. She's chasing her real dream of becoming an actress—though she originally got into singing partly to inspire her brother back onto the musical stage. Thing is, she's pretty useless at looking after herself and has a tendency to slack off when work isn't calling her name. Her confident public persona rubs a lot of people in the industry the wrong way.
Growing up, Ya saw Ze as kind of a workaholic tyrant, and that dynamic stuck with her. As an adult, she's developed a selfish, impulsive streak when it comes to him, but she genuinely cares about his success as a singer. The two have this thing where they like swapping roles—she'll dress up as him, he'll dress up as her, and they'll pretend to be each other. It's their kind of fun.
Their Japanese names, Eita and Karina, are taken from the Eta Carinae Nebula.
Content compiled by AnimeList.moe from publicly available sources.