Group B.O.Y. Kim Kook-Heon, Song Yu-Vin have unveiled all of their mini first album concept photos.

The Music Works, the agency, uploaded the last concept photo of the 6PM version of B.O.Y.'s first mini album, "Phase One: YOU," through its official SNS account at noon on Dec. 30.

Kim Kook-Heon and Song Yu-Vin in the released version of 6PM caught the eye at once, looking darker than the previous version. In Monotone's refined atmosphere, Kim Kook-Heon revealed the charm of Ommphatal with a queer look, and Song Yu-Vin was impressed with a look reminiscent of a nobleman.

In the group photo, the dark appeal of the two was more than doubled, giving off a deadly charm, and drawing 100 percent of the attention of those who saw it as another attraction, including a jean jacket and a black suit.

B.O.Y. released all of its ambivalent concept pods, raising questions about the new album with their colorful appeal. In response, B.O.Y. is expected to increase their comeback fever by releasing track lists, trailer videos, and music video teaser and highlight medley videos.

B.O.Y. has two meanings: ‘Best Of You’ and ‘Both Of You’, which is referred to as ‘Kook-Heon&Yu-Vin’ or ‘Kook-Heon, Yu-Vin& Fan,’ and plans to release their first mini album ‘Phase: You’ on January 7.

Meanwhile, online preorders for B.O.Y.'s first mini-album, "Phase One: YOU," was available on various music websites at 3 p.m. on Dec. 30.