The New Teacher's Skeleton Case (Part One) Wakasa Rumi is introduced. She will be acting as an assistant homeroom teacher for Conan’s class. Conan thought it is unusual to get assistant this late in the year. Wakasa Rumi sensei appeared to be clumsy and timid. Wakasa Sensei, Conan and the detective boys went to the old storage to get some lime. In there, they discovered a 10 year old skeleton in the basement. The skeleton is seen holding a strange string with Chinese characters on it. Wakasa sensei “accidentally” ripped off a schedule giving Conan a hint to solve the case.