“Red Balloon” has teased Seo Ji Hye, Lee Sang Woo, and Oh Eun Seo’s exciting day at the amusement park! Starring Seo Ji Hye, Lee Sung Jae, Hong Soo Hyun, and Lee Sang Woo, JTBC’s “Red Balloon” is a thrilling yet passionate story about the sense of deprivation we all feel when comparing ourselves to