Hirayama Yuki has joined ANGERME as their tenth generation member. 

Hailing from Kanagawa Prefecture, Hirayama is just 15 years old and in her third year of junior high school. She has been active as a Hello! Project trainee since August of 2019. 

Hirayama officially joined ANGERME on December 30, and her member color is light green. She participated as a member of ANGERME in the live event 'Hello! Project Year-End Party 2021 ~GOOD BYE & HELLO!~' on December 31 at Nakano Sun Plaza Hall.