"Only You" is the 24th single by Dream overall and their first major release as a 4-member group. It was released on May 29, 2013 in four editions: CD+DVD, CD Only, One Coin CD and a MUSIC CARD edition. The One Coin CD and MUSIC CARD editions were only sold at the single's event venue and on LDH Mobile store.
The song was used as theme song for Samantha Thavasa's Samantha×Kawaii×Art CM and was pre-released digitally on May 8. The b-side "MY DAY, ONE WAY" was used as theme song for the drama Monsieur! and was pre-released digitally on May 15.