앤더블 has made a remarkable debut, selling 731,673 copies of their mini-album 'Sequence 01: Curiosity' in just one week. This achievement has earned them the 4th highest debut album sales in history. The group's members, 장하오, 유승언, 리키, 김규빈, and 한유진, have proven their presence in the K-pop scene with their powerful debut. | 앤더블 has made a remarkable debut, selling 731,673 copies of their mini-album 'Sequence 01: Curiosity' in just one week. This achievement has earned them the 4th highest debut album sales in history. The group's members, 장하오, 유승언, 리키, 김규빈, and 한유진, have proven their presence in the K-pop scene with their powerful debut.