I've Fallen For You - animzoon.com

A tale that follows the eccentric female detective Tian Sanqi as she solves numerous cases while looking for her long-lost "brother." Tian Sanqi had an odd fondness for doing autopsies as a child. She had an older 'brother' who would always stand by her side, and they got to spend a lot of happy years together. He mysteriously vanishes one day. As a young girl, Sanqi makes a commitment to find her true love and to never get married unless it's to him. She meets a lot of possible candidates in her hunt and makes new pals. The gang unintentionally gets entangled in a number of local crimes, one of which appears to have a direct connection to the disappearance of her "brother" all those years ago. 10-year-old stunning conspiracy