Seok-beom Kang

After dropping out of high school, Tae-sik sweeps out bullies on the street with his bare hands. Whenever he drinks alcohol, he becomes doglike and he is called "mad dog" because of not being afraid of a knife or blood. He is paroled, but Min-seok -- who Tae-sik harasses -- has become a detective... (seoulselection.com)

Mr. Hong is kind of a guy who seems to know everything and do everything well, and everybody in town loves him. Hye-jin moves to town to open her own dentist's office. At first, they don't seem to get along very well. But it's always Mr. Hong who comes to her rescue whenever she is in trouble, whether big or small.

On the day of the hundreds billion dollar contract deal just ahead, Jung suddenly disappears after he leaves for a convenient store. Inspector Kim who is desperate to get an exclusive crime case in the hope of drawing… (themoviedb)

A young woman suspects her new boyfriend of infidelity and discovers that he actually has two other girlfriends. She meets the other women and the three of them become best friends. (imdb)