Crucial Star (크루셜 스타) is a South Korean rapper, singer-songwriter, and producer currently under C-JeS Entertainment. He debuted as a soloist on September 16, 2010 with his single ‘Catch Me If You Can’.


  • Stage Name: Crucial Star (크루셜 스타)
  • Birth Name: Park Se-yoon (박세윤)
  • Birthday: October 16, 1989
  • Zodiac Sign: Libra
  • Height: 182 cm (5’11”)
  • Weight: 64 kg (141 lbs
  • Blood Type: A



– He was born in Seoul South Korea.
– He first debuted under Soul Company in 2010 – 2012, then moved to Grandline Entertainment from 2012 – 2016. – He is now under C-JeS Entertainment.
– He began his career when he was 17, as a member of the hip hop group Libra Twins.
– His father is the painter Hang-Ryul Park
– In 2015, he appeared as a contestant on Show Me the Money 4. He was eliminated in the preliminary round after forgetting his lyrics.
– In October 2015, C-JeS Entertainment announced he was in a relationship with Heize. A week after this announcement, it was reported that they had broken up several months before.
– His moms name is Kim Tae-yeon.
– On May 30, 2019 Crucial Star confirmed on Instagram the news that he’s dating actress Kim Jin Kyung.


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