Sihwan
Sihwan (시환), born Kim Si-hwan, reached the public through Mnet's Boys II Planet before landing in the final lineup of TUNEXX, IST Entertainment's seven-member rookie boy group. He did not make the survival show finale, but the program gave him the first wave of recognition that carried into TUNEXX's official March 2026 debut cycle.
What makes Sihwan more interesting than a standard rookie-profile entry is that his page is not built only on trainee exposure. TUNEXX framed him as part of the group's creative engine early, tying his identity to songwriting participation rather than limiting him to visual or variety positioning. That gave him a slightly different shape inside the debut conversation, especially for fans looking for members who might matter to the group's catalog over time, not just its first promotion window.
The rollout itself was fast and well structured. TUNEXX opened with the January 2026 OST One Last Chance for SBS drama No Tail To Tell, then formally debuted on March 3 with SET BY US ONLY and the title track I'm Alive. Sihwan's role in that opening stretch made him one of the members worth tracking beyond rookie-week hype: a vocalist with survival-show familiarity, official-platform visibility, and a clear lane inside the team's creative identity.
