Sawan Biang (สวรรค์เบี่ยง) is a 1970 novel by Krisna Asokesin is about a young innocent woman named Narin who find herself a victim of lecherous stepson of her sister. It was adapted by a movie and four television series.
When Narin's sister Leela lost her fiancée, she was visited by a rich businessman named Worawat who was a widower and a single dad to his son Kawee. Kawee was a spoiled man as well as a ladies' man who happen to be Leela's high school crush. Realizing their loss of loved ones, they formed a bond and decided to marry. This caused a shock to her mother and Narin. After their marriage Leela and her family moved to Worawat's mansion despite Kawee's hatred for Leela who he thought was trying to replace his late mother. So he planned Narin as doll. Following his father's death, he tried to kidnap her. Kawee ended up raping Narin. Silenced by rape Narin decided to leave the mansion and Kawee was kicked out of his father's will which now belonged to Leela. Kawee was shocked when he saw Narin was pregnant.