She is an ordinary passer-by in Conan 13 version of Dark Tracker. She has passed away and only appeared in the form of memories, but she was the victim of a fire and the motive of a case.

When Caicai was traveling with her boyfriend Mizutani Kosuke, she died in a hotel fire. At that time, eight people were trapped, but the escape elevator was only enough for seven people, so Caicai left voluntarily and was burned to death. His brother Honjou Kazuki died in the fire because his beloved sister gave the elevator to someone else. It's hard to let go of my sister's kindness. She lied that her sister was driven out of the elevator by seven people in an attempt to induce Mizutani Kosuke to retaliate. After the failure, she did it herself and blamed Shui Gu. Mizutani Kosuke was deeply moved by Caicai's son and felt that there was no love in her life after her death. I believe that if Caicai were still alive, they would be happy lovers.