[1] In November 2021, she, Josh Carrott and Ollie Kendal opened a specialist "Korean Toast" restaurant in London.

[14] In October 2020, Carrott and Kook came under scrutiny due to their alleged violation of South Korea's COVID-19 quarantine regulations.

In one shot, Kook is shown removing her face mask to blow out candles on a birthday cake and apply lipstick, albeit in a socially distanced manner.

In her apology video, Kook confirmed that she was mistaken in believing she was paying for national health insurance in South Korea.

[16] The alleged violation has since been investigated by Korean police who found sufficient evidence to send the case to prosecution in December 2020.