Originally, Shimotsuki and Myu of Refio (formerly a band made up of Myu and Riya) collaborated under the name Refio + Haruka Shimotsuki when they performed "Toumei Shelter", ending theme for Rozen Maiden in 2004.
Shimotsuki og Myu (tidligere et band af Myu og Riya) samarbejdede originalt under navnet Refio + Haruka Shimotsuki da de lavede Toumei Shelter, sluttemaet til Rozen Maiden i 2004.