It was released as a double A-side single titled Spring of a Twenty Year Old (스무 살의 봄; Seumusal-ui Bom), coupled with "Every End of the Day".

Later, on the May 22 episode of SBS's Strong Heart, IU revealed that her label had requested for her to draw an image for the "Peach" teaser.

The teaser video also shows footage of IU singing and playing guitar as she writes the song.

[3] The text description of the teaser, uploaded on LOEN Entertainment's official YouTube channel, revealed the first details about the song.

In an interview with Cyworld, she revealed that she used these instruments as she felt that they represented childhood, which allowed her to create a playful atmosphere in the song.

The teasers were themed to display IU's travels from Incheon, South Korea to Venice, Italy.