Shou Iimura, also known as Shou Okamoto, is a vocalist from New York City who was born on October 19, 1990. He was previously a member of Zutto Zuletellz and the children's performance group Precoci. His father is an American jazz saxophonist named Scott Hamilton.
Kouki Hayashi, known as Kouki Okamoto, is a guitarist from Nerima City in Tokyo who was born on November 5, 1990. He is also a former member of Zutto Zuletellz and the eldest son of Masatoshi Hamada and Natsumi Ogawa.
Ikumi Hamada, known as Hama Okamoto, is a bassist from Tokyo who was born on March 12, 1991. He was previously a member of Zutto Zuletellz and the eldest son of Masatoshi Hamada and Natsumi Ogawa.
Reiji Miyake, known as Reiji Okamoto, is a drummer from Futako-Tamagawa in Setagaya, Tokyo who was born on January 9, 1991. He was previously a member of Zutto Zuletellz and the eldest son of The Privates lead singer Tatsuji Nobuhara. In his childhood he made child role dramas.
Masaru Okamoto is a bassist who left the band in 2009.