Seunghan | |
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 Seunghan in 2023 | |
| Born | Hong Seung-han October 2, 2003 Goyang, Gyeonggi Province, South Korea |
| Education | School of Performing Arts Seoul |
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| Years active | 2022–present |
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| Korean name | |
| Hangul | 홍승한 |
| Revised Romanization | Hong Seunghan |
| McCune–Reischauer | Hong Sŭnghan |
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Hong Seung-han (Korean: 홍승한; born on October 2, 2003), known mononymously as Seunghan, is a South Korean singer. He is a former member of South Korean boy band Riize, debuting under SM Entertainment in 2023. He will debut as a soloist in the second half of 2025.
First introduced in July 2022 as a member of SM Entertainment's idol training team SM Rookies, Seunghan debuted in September 2023 as a member of Riize. Amid leaks and criticism related to his personal life, Seunghan took hiatus from the band beginning in November 2023, briefly returning in October 2024 only to withdraw permanently two days later amid backlash from a subset of the band's fans.
The circumstances surrounding Seunghan's exit from Riize sparked controversy, with many criticizing what they perceived to be a toxic cancel culture mentality among South Korean fans, and bringing commentary on the differing and sometimes incompatible cultural expectations of idols as K-pop expands internationally.