– She was born in Aichi Prefecture, Nagoya, Japan.

– She has an older sister (born in 2002).

– Her representative color is Green.

– She is a fan of Red Velvet and her bias is Joy.

– She had never cut her hair until she was announced to debut.

– Her favorite colors are white, black, and pastel shades.

– Her name means lovely and graceful.

– She is really good at drawing.

– She likes decorating things.

– She likes collecting pretty items such as roses and butterflies.

– If she were a fan of IVE her bias would be Liz.

– Her favorite item is headphones that her grandfather gifted her.

– Liz‘ nickname for her is “Darling”.

– The members gave her the name “Kim Rei” because she is very fluent in Korean.

– Rei and Yujin went to the same school.

– Rei and Liz shared a room and depended on each other during trainee days.

– Her mom sends Japanese snacks to the dorm.

– In March 2022, Rei became a muse for skin care brand Bonajour.

– When asked which member she would take on vacation, she chose Leeseo because they are “quite immature” and Leeseo tells Rei trendy things at school.

– She often takes hot baths in the master bathroom at the dorm.

– She wants to take pictures in an amusement park in her school uniform once she turns 20.