Satu Koyasu was born in the Shakotan, a city neighbouring Otaru, on November 21st, 2006. She moved to Otaru when she was 7 years old, and that was where she met her friend, Kino Fukuma. She would then meet a half-Russian half-Japanese girl named Reiko Doroshenko in September 2020, where they would also become close friends. In October the next year, Satu would switch schools, and this resulted in her not being close to Reiko and Kino as she used to be. Satu is flamboyant like Yahui, but she is more capable of controlling herself while around her friends. She loves watching baseball. Height: 5'3 (167cm) Languages: Native Japanese and beginner English Favourite Colour: Black Occupation: High School Countries Lived In: Japan Countries Visited: Taiwan, Singapore, South Korea and Indonesia First Anime: Naruto Favourite Anime: N/A Favourite Singer/Band: K Dub Shine Favourite Song: Realniyaru by K Dub Shine Body Count: 0 Family: Gennai Koyasu (Father) Yoriko Koyasu (Mother) Taro Koyasu (Younger Brother) Friends: Kino Fukuma (Friend) Reiko Doroshenko (Friend) Yahui Zhang (Friend)