Desperate Mrs. Seon-ju

I feel like I'm not the main character in this life... (1x40)

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Sang-ah slaps Seon-ju, and Seon-ju gets back at her by punching Nam-jin in the face. Soon-ae meets Yeon-ae at Nam-jin and Sang-ah's studio apartment, and they have a heated argument. Jin-ju meets someone from her past and becomes flustered. Woo-sang visits Mi-ju, and So-woo makes Seon-ju an offer.