Child actor Kim So Hyun will join the new MBC Monday/Tuesday drama "Triangle."

Kim So Hyun took on the child roels of Lee Bo Young, Sung Yoo Ri and other famous celebrities and was cast in the role of Oh Yeon Soo strengthening the presence of "Child Role Queen."

"Triangle" is about three brothers that lost their parents and spent 20 years without knowing each other as they later reunited as brothers and the drama deals with their love and success.

In the drama, Kim So Hyun's mother dies and plays the role of Hwang Shin Hye who grows up as a "Daddy's Girl" under her policeman father.

Young Shin Hye starts to like a boy that suddenly appears in her life and adds humor to the drama. More than that, Jang Dong Soo (played by Lee Beom Soo) and Hwang Shin Hye (played by Oh Yeon Soo) continue their love line and will act out details.

Meanwhile, in the SBS drama "The Suspicious Housekeeper" Kim So Hyun played the role of the strong older daughter and showed great acting skills about the harmony and ties of family and strong family love.

In addition, she has been on MBC "Music Central" as the only female MC and showing off her pure and lovely looks with soaring popularity.

"Triangle" features Kim So Hyun, Lee Beom Soo, Kim Jae Joong, Lim Shi Wan, and Oh Yeon Soo as it will be broadcast after "Empress Ki" in May.