0+1=1 (I Promise You)

0+1=1 (I Promise You) is the second mini album by Wanna One. It was released on March 19, 2018 with "Boomerang" serving as the album's title track. The song "I. U." was pre-released on March 5. "Boomerang" and "Gold" were leaked online on March 14.

1. 1.GOLD
2. 2.I PROMISE YOU (I.P.U.)
3. 3.BOOMERANG
4. 4.WE ARE
5. 5.DAY BY DAY
6. 6.I'LL REMEMBER
7. 7.I PROMISE YOU (Propose Ver.)