Mitsuki Kimura, known professionally as Kōki, is a Japanese model and songwriter. Mitsuki Kimura was born on February 5, 2003 in Tokyo, Japan to actor Takuya Kimura and singer Shizuka Kudo. She had taken lessons in piano and flute and won the Excellence Award at the 23rd Yamano Junior Flute Contest.She attended The British School in Tokyo and is fluent in English. Watch drama online for free.