Jang Hee-jin replaces Koo Hye-sun in "You're Too Much"

Published on 2017/03/26 | Source

Koo Hye-sun had to quit MBC "You're Too Much" due to health reasons.

Jang Hee-jin replaced her and prevented any complications from happening. Koo Hye-sun had returned with a drama for the first time in 2 years but her allergic reactions led to her stepping down.

Apparently she's allergic to pollen and dust which causes itchiness and swelling.