Kim Yeong Kwang, Oh Jeong Se and BTOB's Sung Jae have been cast in the upcoming tvN drama 'Nine Boy'.

On May 22, according to broadcast insiders, the three main lead cast Kim Yeong Kwang, Oh Jeong Se and BTOB's Sung Jae have already confirmed their appearances.

'Nine Boy' is a drama which revolves around the life story around men at the ages of 9, 19, 29 and 39. Kim Yeong Kwang takes the role of 29 years-old while Oh Jeong Se takes the character role of a 39 years old. On the other hand, because of his popularity from 'Reply 1994' last year, BTOB's Sungjae is taking the role of the 19 years old boy.

'Nine Boy' is scheduled to premiere next month.