|Full Name||Kawai Ruka|
|Country of Birth||Japan|
|Date of Birth||Mar 20, 2002|
|Age||21 years old|
Kawai Ruka (河井瑠花; born Mar 20, 2002), simply known as Ruka, is a Japanese dancer, rapper, and a member of the K-pop group BABYMONSTER under YG Entertainment. She made her debut in 2023 at the age of 20.
Ruka was born in Japan on Mar 20, 2002, as an only child. From 2016 to 2018, prior to debuting with BABYMONSTER, Ruka promoted as a member of Shibu3 Project, a Japanese girl group, under the Blue Class sub-unit. She was the lead hip-hop dancer in the group.
In 2018, at 16, she passed the audition with YG Entertainment. During training, she was praised for her strong dancing skills, which she had been mastering for 10 years. She trained for 4-5 years before her debut with BABYMONSTER.