Main •
Son Ho-jun as Choi Ban-do : A pharmaceutical salesman and Ma Jin-joo's husband. He was a Civil Engineering student at Hankook University. However, after he graduated and got married, he started working as a pharmaceutical salesman, begging doctors and directors to buy his products, even willing to spend more money for his clients at bars, do menial jobs, and even be bullied by them. Furthermore, one of his cruel clients pays him to hide his younger nurse mistresses from his wife by using credit cards under his name, with various hotels and motels listed on the bill. One day, feeling exhausted from the cruel treatments from his clients and consistent naggings from Jin-joo, he agrees to his wife's divorce plea, wishing that they had never met each other. •
Jang Na-ra as Ma Jin-joo : A homemaker and Choi Ban-do's wife for more than 10 years. She was a History student at Hankook University. She used to be germophobic, but after becoming a homemaker, her hygiene deteriorates to the extent of willing to eat her son's food that he can't bite, wearing stained outfits most of the time, and becoming gluttonous, eating at a faster pace than the average person. At first she was happy in her marriage, but after some years she started to feel exhausted and unhappy with her situation of being a homemaker, wishing herself to have a better job and income. She also feels that Ban-do starts abandoning her in term of affection and finances, believing that he is a cheap person. After a misunderstanding one night, she wishes to go back to the time when she had never met him, and files for a divorce while demanding alimony for herself and their son, Seo-jin.
Supporting People around Ban-do •
Heo Jung-min as Ahn Jae-woo :Ban-do's classmate in the civil engineering department. He is a weakling and provides comic relief, but tries to change due to his love for Yoon Bo Reum. •
Lee Yi-kyung as Go Dok-jae • Jo Ryun as Kang Kyung-sook, Ban-do's mother •
Lee Sang-min •
Lee Hwi-jae •
Yang Ji-won • Kim Ki-doo as Soldier (Ep.6) • Seo Woo-jin as Seo-jin running baby on the bridge (Ep.2) ==Production==