Happiness was formed by EXPG graduates. Kaede was chosen to be one of their members and started her activities as a dancer stylized as KAEDE. Kaede made
formation of F5ve, its members Sayaka and Kaede were both members of the LDH girl group E-girls and its subgroup Happiness, which was led by Miyuu and also contained
"Oh Boy" in March 2017. Although not a musical or performing act, Happiness member Kaede and Flower member Harumi Sato created a sub-group named Twin Tower