CJ E & M announced that it will pre-sell the photo essay "Do not Lose Our Memories" from the project group Wanna One until the 22nd from 10th.

It is a booklet on activities since Wanna One's debut on August 7 last year. He recorded about 300 photos behind his first mini album '1X1 = 1 (TO BE ONE)' and the repackage album '1-1 = 0 (NOTHING WITHOUT YOU)'.

In addition, it carried out the interview which was ahead of the announcement of the second mini album '0 + 1 = 1 (I PROMISE YOU)'. Members honestly share their musical concerns and future plans.