Episode 18 S01 E18

Kim Hee-seon (as Woo Ah-Jin) Kim Seon-a (as Park Bok-Ja) Jung Sang-hoon (as Ahn Jae-Suk) Lee Ki-woo (as Kang Ki-Ho) Kim Yong-geon (as Ahn Tae-Dong) Jung Da-hye (as Oh Kyung-Hee) Lee Tae-im (as Yoon Sung-Hee) Oh Yeon-ah (as Baek Joo-Kyung) Moon Hee-kyung (as A-Jin's mother) Oh Na-ra (as Ahn Jae-Hee) Seo Jeong-yeon (as Park Joo-Mi) Lee Chae-mi (as Ahn Ji-Hoo) Han Jae-yeong (as Ahn Jae-Goo) Song Young-gyu (as Jang Sung-Soo) Choi Youn-so (as Heo Jin-Hee) Yoo Seo-jin (as Cha Ki-Ok) Lee Hee-jin (as Kim Hyo-Joo)

romance battle of wits chaebol