Jang-soo and Seong-yeon have been married for about 10 years, but they have an unspeakable secret; Jang-soo's brother, Jae-cheol. Jae-cheol used to go out with Seong-yeon before she met Jang-soo. And although Jang-soo couldn't help but marry Seong-yeon knowing her past, he himself had a young girlfriend named Eun-hye... Jae-cheol was getting along fine with Eun-hye when one day she breaks up with him. The love story between two brothers in "Big Breasted Sister-In-Law" will soon come out.
Sung Yeon
Seo Bo-ra
Hae Il
Min Do-yoon
Score: 2.0
Score: 0.0
Score: 6.9
Score: 5.3
Score: 5.7
Score: 4.5
Score: 10.0
Score: 4.7
