designer Haruka Masuko Paris/Tokyo: Runway director assistant. (haute couture fashion shows) Tokyo: Accessories buyer assistant of H.P.France.S.A Using that experience, she started making jewelry on her own. Then, she established RUKA. Her design of resin jewelry confined the parts that find flying around all over the world is highly evaluated. Holding evens on department store, she continued to be vigorously active. 2017: Opened the flagship shop in Lumine Shinjuku. 2018:Launched men's collection.