The song was pre-released digitally on June 12, 2019, and the CD single was later released on July 17 by Warner Music Japan.

[11] Tamar Herman, writing for Billboard, said the song is "meant to represent the brightness of a summer day" and described it as "a bouncy dance track similar to many of Twice's past songs, with its euphoric choral repetition of the titular phrase and a clapping beat guiding much of the melody".

It features Twice dressed in colorful, sporty looks and backed by bright graphics as the members are seen playing around during summer days.

The single was also performed during the Japanese leg of Twicelights World Tour, which began on October 23 in Sapporo.

[18] It also debuted at number 2 on the Billboard Japan Hot 100 with 302,963 unit sales and 1,586,047 streams recorded July 15–21, 2019.