The following year, they released their second single "One Two Three" in April, which performed moderately on the charts than their former recording.[5] For the release, two new members were added into the band: Reina Kizu and Anna Suda, both coming from EGD (EXPG Girls Dancers), a dance group formed at the Exile Professional Gym Academy.[6] Before the preparation of their follow-up number "Follow Me", Happiness member Mayu Sugieda went on hiatus in August to undergo medical treatment after being diagnosed with infectious mononucleosis.[7] Furthermore, LDH added several more members into E-girls, including the girls from the un-debuted Bunny group and EGD dancers.