Cignature is an electrifying seven-member girl group signed under the label J9Entertainment. Their dazzling debut on February 4, 2020, with the catchy digital single "Nun Nu Nan Na" set the K-pop scene ablaze. The lead single's debut schedule was unveiled on January 22, building anticipation for their arrival. Captivating promotional photos were released from January 27 to 28, with an electrifying MV teaser dropping on January 30, followed by a mesmerizing dance practice on the 31st. The official music video for "Nun Nu Nan Na" was unleashed on February 3, leading to the single's release on various music platforms the next day. The group's debut showcase, "Cignature Move", wowed fans on February 4th. In a surprising turn of events, Sunn and YeAh bid farewell to the group on April 27, 2021, prompting J9 Entertainment to welcome new members Chloe and Dohee on June 14, 2021. The group continued to make waves in the industry as former member HyeonJu (Belle) delighted fans by joining the SBS survival show, Universe Ticket, where she secured a spot in the project girl group UNIS as its talented leader, ranking 6th in the finale.