Four of the Takarazuka Revue's former top stars are putting together a temporary unit known as T4. The group consists of Jun Shibuki, Wataru Kozuki, Nao Ayaki, and Kei Takashiro, who are appearing together this December in a musical called "Ai to Seishun no Takarazuka ~Koi Yori mo Seimei Yori mo~." The musical is based on a two-part drama that aired on Fuji TV in 2002.

T4 will release a single on December 3, featuring two songs used in the musical. They plan to be active as a group until March, when they finish taking the show to other cities. Their activities as T4 will reportedly extend beyond the theater, such as making appearances on television music shows.