Dear Hyeri

Joo Eun Ho is an unknown announcer with 14 years of experience. She struggles to get the chance to have her name recognized by the public. She also has another personality, Joo Hye Ri, due to a deep wound in her heart. Her alter-ego, Joo Hye Ri, is super positive and works as a parking attendant.
Jung Hyeon O is Joo Eun Ho's ex-boyfriend; they dated for a long time but broke up. He became a star announcer as soon as he joined the broadcasting station and is the most-liked announcer by the public, but Jung Hyeon O also carries a hidden wound in his mind that he has never shown to anyone. Somehow, Joo Eun Ho and Jung Hyeon O reunite and help cure each other's wounds.
(Source: AsianWiki)