Spring (Korean: 사춘기 상; Hanja: 思春記 上; RR: Sachun-gi Sang) is the first extended play and second musical release by South Korean brother-sister duo, AKMU.

On April 25, 2016, YG Entertainment revealed the first teaser picture, with the title of the album.

[1] On April 27, they released an artist film for the album.

[2] Two days later, the album's track list was revealed.

The concert was broadcast on Naver's V app.