Last year, the 33-year-old actor portrayed a charismatic novelist and radio DJ, Jang Jae Yeol, who suffers from obsessive-compulsive disorder (OCD) due to his abusive childhood in the highly rated TV series It's Okay, That's Love. In-Sung demonstrated the character’s complex personality smoothly and convincingly, to considerable acclaim. On February 28, In-Sung visited Bangkok to meet Thai fans at the So In Love with Zo In-Sung Fan Meeting at JJ Mall.