Jang Hee-jin replaces Koo Hye-seon in "You're Too Much"
Koo Hye-seonhad to quit MBC"You're Too Much"due tohealth reasons.
Jang Hee-jinreplaced her and prevented any complications from happening.Koo Hye-seonhad 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.
Source from :Hancinema