On February 27, the boy group's 2nd mini album became available for pre-orders. As of March 2, the number of pre-orders reached over 700,000 copies; the best pre-order record for Wanna One so far.

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Back in July 2017, Wanna One made an impressive record with their debut album, '1x1=1 (To Be One)', which hit over 500,000 copies in pre-orders. The repackage album, '1-1=0 (Nothing Without You)', also exceeded 500K in pre-orders. 

Wanna One is expected to continue their immense success and make new records with the new album, which will be available in two version of 'Day' and 'Night'. 

Prior to the full release, Wanna One has dropped a pre-release track "I.P.U" dedicated to their loving fans. The track has quickly topped charts, showing the great power of the boy group.

Meanwhile, '0+1=1 (I PROMISE YOU)' will be fully released on March 19.