Oh! Youngsim

O Yeong Sim, a 30-something TV variety show PD, has struggled with low ratings and cancelled shows. In a career crisis, she gets a chance to produce a love entertainment pilot, casting famous start-up founder Mark Wang. To her surprise, he is Wang Gyeong Tae, a childhood acquaintance who once had a crush on her. Though she didn’t feel the same, they lost contact after he moved to the U.S. Now, 20 years later, Wang Kyung Tae returns as CEO Mark Wang. PD Lee Chae Dong, her supportive colleague, and her friend Koo Wol Suk, who runs a popular YouTube channel, are also part of her life. (Source: MyDramaList) ~~ Adapted from the aeni "Yeongsimi" (영심이), which in turn is adapted from the comic series "14-year-old Yeongsimi" (열네 살 영심이) by Bae Geum Teak (배금택).