Idol group Boyfriend member Hyunsung showed off his toned body.

Today on their agency's official twitter, they posted, "Hyunsung has lost 5 kg for their new album. Here is a first look at his abs! What do you think?" along with a picture.

In the picture, Hyunsung is topless and showing off his 'chocolate' abs. 

Internet users commented, "Is that computer graphics" and "His face is luxurious and his body is a beast."

Boyfriend has come back with their new album, Janus.