Here are some Japanese idols in k-pop i hope you appreciate for coming from Japan or even has Japanese blood in them.
Hirai Momo (平井 もも Hirai Momo), known mononymously as Momo (Hangul: 모모), was born on November 9, 1996 in Kyōtanabe, Kyoto, Japan. She is the main dancer of Twice.
Momo started dancing at a very young age and decided to become a singer because of Amuro Namie and got into K-pop after watching Rain and Lee Hyori. She was scouted by JYP Entertainment after they saw a dance video of her and her older sister. She was told to audition with her sister on April 13, 2012, though she was the only one who made it in.
In 2014, she appeared in the music video of Got7’s “Stop Stop It” and the Japanese MV of Junho’s “Feel”. In the following year, she appeared in the music videos of Wooyoung’s “R.O.S.E” and miss A’s “Only You.” She is the only eliminated member of the survival show Sixteen to be brought back to debut as a member of Twice.
2. Sana Minatozaki
Minatozaki Sana (湊崎 紗夏 Minatozaki Sana), known mononymously as Sana (Hangul: 사나), was born on December 29, 1996 in Tennōji-ku, Osaka, Japan.
Sana first got interested in K-pop because of Girls’ Generation’s and KARA’s rising popularity in Japan. In her last year of middle school, she was scouted by JYP Entertainment on the street and auditioned on April 13, 2012. She appeared in the music video of Got7’s “A” and Junho’s “Feel”.
Myoui Mina (名井 南 Myōi Mina), known mononymously as Mina (Hangul: 미나), was born on March 24, 1997 in San Antonio, Texas, and moved to Kobe, Japan, when she was a toddler.
She studied ballet for eleven years before joining Urizip dance school for more modern dance training. In 2013, she was scouted by a JYP Entertainment staff member while shopping with her mother and was invited to join JYP Entertainment Global. She auditioned in a JYP audition in Japan and joined the trainee program in South Korea on January 2, 2014. She appeared in the music videos of Got7’s “Stop Stop It”, Junho’s “Feel”, Wooyoung’s “R.O.S.E”, and Miss A’s “Only You”.