Billlie’s Tsuki made a lasting impression as a guest student on JTBC’s 'Knowing Foreign Language High School', showcasing her vibrant energy and variety show skills on the February 18th KST broadcast.

From the moment she appeared with a bright smile, Tsuki exuded her signature “human vitamin” charm, keeping the atmosphere lively with her cheerful reactions throughout the show.

One of the standout moments was Tsuki’s playful interaction with the 'Knowing Foreign Language High School' cast. While speaking casually to her teacher Boom, she showed polite deference to her senior, (G)I-DLE’s Minnie, creating a humorous contrast. Additionally, during the class president election segment, she humorously exposed Jonathan, who pressured her into nominating him in exchange for a potential fixed guest spot, displaying their close friendship and comedic chemistry.

Tsuki also revealed the secret behind her impressive Korean skills. She shared, “I came to Korea when I was 13. I wanted to improve my Korean so badly that I even stopped contacting my mom for a few months.” The cast admired her dedication and study methods.

During a vocabulary test segment designed to assess leadership skills, Tsuki misinterpreted the phrase “Let’s do it verbally” as “Don’t say it, just act,” earning laughter from everyone on set.

Meanwhile, Billlie continues their global rise as they kick off their world tour 'Billlie World Tour ‘Our FLOWERLD (Belllie’ve You)’ ASIA & OCEANIA' in Melbourne, Australia, on February 19th (local time).

SEE ALSO: Billlie kicks off Oceania leg of world tour with Melbourne concert