Nickname: Haruchan
Yoshiki Haruka was born on July 1, 1998. She auditioned for Step One Sendai Junior Talent Agency and was placed in the group REX. Haruka was transferred to B♭ (B Flat) on July 19, 2010. The seven main members of B Flat, including Haruka, graduated in June 2012 and she became a member of the group Party Rockets. After the graduation of Watanabe Koume in December 2013, Haruka became the new leader of Party Rockets.
Yoshiki Haruka was born on July 1, 1998. She auditioned for Step One Sendai Junior Talent Agency and was placed in the group REX. Haruka was transferred to B♭ (B Flat) on July 19, 2010. The seven main members of B Flat, including Haruka, graduated in June 2012 and she became a member of the group Party Rockets. After the graduation of Watanabe Koume in December 2013, Haruka became the new leader of Party Rockets.