Seo Chang Bin is the main rapper and producer of Stray Kids and sub-unit 3RACHA. He was a participant in the JYP Entertainment and Mnet’s new boy group survival program titled Stray Kids. He wanted to become a singer because when he danced and rapped at his school’s festival, the audience’s reaction was unforgettable. Before debuting, he trained for 2 years. Watch drama online for free.