Samuel Kim recently collaborated with Seventeen members Mingyu and Hoshi for the "Rockstar" challenges. In the videos, Samuel expressed his gratitude towards Mingyu, referring to him as his brother, and showed his excitement to work with Hoshi, whom he called the coolest tiger. Samuel originally trained with Seventeen at Pledis Entertainment but didn't debut with them due to his young age. He later debuted with another group and gained popularity through 'Produce 101' season 2. The soloist recently released his single "Rockstar". Seventeen is preparing for a comeback with their 5th full album, 'Happy Burstday', scheduled for release on May 26 at 6 PM KST.