Kang Rae-yeon

Ji-Suk and Hee-Jin were junior high school classmates. By chance, they meet again several years later when Ji-Suk goes to cut his hair, where Hee-Jin is a senior hair designer. Their paths cross by chance a few more times and the two grow closer. Finally, Hee-jin suggests a 'one month romance.' "Neither one of us can say 'Let's break up' before the month is up! After a month, we part ways grandly!" The two have nothing in common, but when they are together, everything is so right until... (kfccinema.com)

In A Love to Kill, Bi plays a tough guy as the role of a K-1 Fighter, Kang Bok Gu. Bok Gu is a character who is dynamic in nature and grew up in a foster home. He falls in love with a woman whom he should not love. It was because of the woman, his emotionally-wounded brother fell off from the rooftop and became a nursing case. So, his love is forbidden and inevitably tragic. The woman is Cha Eun Seok who is a TV talent and movie actor. (mydramalist.com)