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.�