Lim Sung-jin was born on January 11, 1999, in Jecheon, North Chungcheong Province.[1][2] He attended Yongdu Elementary School before transferring to Uirim Elementary, where he began playing volleyball.[3] He enrolled at Jecheon Middle and Jecheon Industrial High School.[4] In 2017, Lim was credited for playing a pivotal role in his high school's advancement in the Yeonggwang Cup Volleyball Championship.[5] Lee Da-rae of Insight named his one of the best attackers on the team and a rising star of the next generation.[6]
Lim was selected for the South Korea men's national under-19 volleyball team to compete in the 2017 FIVB Volleyball Boys' U19 World Championship.[11] In the preliminary round against Bangladesh, he scored ten points, the third-most on his team.[12] In the quarterfinals, Lim's thirteen points was credited in part for his team's victory against Taiwan.[13] He was viewed as one of the driving forces that led the team to the tournament's semi-finals.[14]
Playing style and image
Lim plays as a opposite hitter who has been noted for his strengths in offense and defense.[5][15] He played as a left-side hitter from high school; his frequency of attacks decreased in university, while the number of times serving and receiving the ball increased.[9] Together with Lim Dong-hyuk [ko], they have been dubbed "treasures" and the "national duo" of South Korean volleyball.[16][17] He is also referred to as "Suwon's prince".[15] Lim cites Song Hui-chae and Jung Ji-seok as his role models.[3][18]