There are at least 3 acts called S2: - 1. S2 is Korean-Japanese duo consisting of Kim Soo-hyun and Makoto Koshinaka. They debuted in 2006 with EP "Just Like Me". 2. S2 (에스투) was a six-member South Korean girl group under CLIMIX Entertainment. The group consisted of Soyul, Chaewon, Jooah, Suah, Dohee and Yujeong. They debuted on August 24, 2017 with their first single "Honeya". Their name is a combination of "S" (for Serendipity) and "2" for the members and fans to meet together and bring 'unexpected luck and love'. It is assumed they silently disbanded in February 2018. 3. Noeul Nuttarat (Thai: โนอึล; Korean: 노을), also known as S2, is a Thai-Korean singer and actor under Me Mind Y. He debuted on November 1, 2023 with the digital single "Touchdown". User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.