Roots of TAEMIN

Son Ga-in, known mononymously as Gain, is a South Korean singer, actress and entertainer, best known as a member of the South Korean girl group Brown Eyed Girls. Having debuted with her home group earlier in 2006, Gain eventually made her solo debut in October 2010 with Step 2/4 to great commercial success, and has since released a total of six extended plays. In addition to her musical career, the singer also appeared in several native programs and series, most notably We Got Married and All My Love for You, where she co-starred alongside 2AM's Jo Kwon.

Aespa is a South Korean girl group formed by SM Entertainment. The group consists of four members: Karina, Giselle, Winter, and Ningning. The group is known for popularizing the metaverse concept and hyperpop music in K-pop. Aespa debuted on November 17, 2020, with the single "Black Mamba", which achieved the highest number of views in 24 hours for a K-pop group's debut video. Their third single, "Next Level", was released in May 2021 to widespread commercial and critical success, peaking at number two on the Circle Digital Chart and earning the daesang for Song of the Year at the 19th Korean Music Awards. In October of the same year, Aespa released their first extended play (EP) Savage, which became the highest-charting debut album by a K-pop girl group on the US Billboard 200 chart at number 20, while its lead single peaked at number two in South Korea.