will be releasing their 1st mini album "The Intersection: Belief" and making a comeback after almost a year of their debut.

For those who do not know who they are, the 3 boys had previously appeared as trainees under Brand New Music in Mnet "Produce X 101". Even though they did not make it into the debuting group, they have a lot of fans supporting them with love and encourage.

For the past few days, teaser photos for their mini album were released and fans could not help but gasped at how much they have matured and grown over the year!

Some also pointed out that member JungHwan had lost a significant amount of weight and looked more handsome than before.

Take a look for yourself below!

While JungHwan was already causing fans to fall head over heels for him when he was still in the audition program, his most recent teaser photo had also caused many to take a second look at him.

His sharp jawline and handsome side profile had earned the attention of many. Adding on, JungHwan also did not forget to show off his charismatic looks with a smart looking uniform.

It seems like through this comeback, BDC is bound to earn more fans than before.

BDC will be releasing "The Intersection: Belief" on Sept. 23.

Are you also surprised by JungHwan's transformation?