”Billlie” Tsuki, ”The secret to being good at Korean?” ... ”I lost contact with my mother”

Tsuki, a Japanese member of the girl group "Billlie," has revealed her secret to being good at Korean.
On the 18th, JTBC's variety show "Knowing Foreign High School" aired in Korea.
Tsuki, a former member of the girl group "Billlie", appeared as the first student.
"SSERAFIM" Sakura (MIYAWAKI SAKURA) fills the vacancy and works as a one-day observation student
She met and greeted other students, naming Jonathan and Jennie as students she already knew.
Among the friends she was meeting for the first time was Minnie from (G)I-DLE. Tsuki greeted her politely with, "Hello, senior."
She coolly replied to Min, "This isn't a place like that, everyone is friends." Minnie then said, "My school is a prestigious school, so we had tests on the first day,
When I asked Tsuki, "Are you studying?", she answered confidently, "I'm pretty good at it!" I also told her that she has talents in art, languages, etc.
Particular attention was drawn to the phrase "good at languages."
When asked about the secret to her Korean proficiency, Tsuki said, "I came to Korea when I was 13, and my mother
Tsuki surprised everyone by saying, "I really wanted to improve my Korean, so I told my mom, 'Don't contact me until I contact you,' and we stopped contacting each other for a few months.
"I stopped speaking Korean and my Korean improved," he confessed, adding in surprise.