(河合 舞 Kawai Mai): Mai is a pop idol, who appears as a supporting character in the second mystery. Her production crew, and friends gather at a puppet mansion to film a new show starring her. She takes a liking to Sakon, and Ukon, and quickly becomes friendly with them. When her friends and co-workers join up at the puppet mansion, her friends start showing other sides to themselves.
Mai makes a small appearance in the last episode, she appears in the audience with her new manager, to watch Sakon's play.
Mai is very shy, quiet and easily startled.