The overall project launched in January 2016, and Sanrio launched a merchandise line for the project in April 2016.
The characters were newly created for the stage play, titled “Miracle☆Stage Sanrio Boys.”
A press event for Sanrio Expo 2018 held in Tokyo on Friday announced five additional characters and cast members for the Sanrio Boys project’s stage play adaptation.
The project’s premise follows Kōta Hasegawa, a high school boy who loves the yellow Pom Pom Purin dog.