Billy Tsuki decorates the stage of 'Waterbomb Seoul 2026' with a mint tube top and low-rise denimRIIZE.

Billy member Tsuki attracted attention with a unique outfit on the stage of ’Waterbomb Seoul 2026.’ On the 25th, Tsuki posted several photos on her SNS with the caption ″Waterbomb time!!! #Waterbomb.″ In the photos, Tsuki wore a mint-colored tube top and denim pants, striking various poses. She styled a low-rise fashion by unbuttoning and unzipping the denim pants to reveal polka dot underwear. On the same day, Billy (Si-yoon, Sean, Tsuki, Moon Sua, Haram, Suhyun, Haruna) attended and performed on the outdoor Global Stage at KINTEX in Goyang-si, Gyeonggi Province, where ’Waterbomb Seoul 2026’ was held.