Voisper held a showcase for the album and the group began promoting the record by performing on music chart programs across various television networks.

In crafting Wishes, Kangsan wanted to demonstrate the distinction in Voisper's maturity between its formation in high school to the members' ages as they approach their mid-20s.

Lyrically, the album's themes revolve around experiences of youth: life and memories, love and partings, and dreams and hopes.

A song about pursuing one's passion and the "positive energy" from the weather, "Fine Day" incorporates elements of rock music.

[3][4] "Reminiscence Collection" utilizes a "trendy" arrangement and "Can't Let the Curtain Fall" delivers a message of hope.

[1] The album closes with a pair of mid-tempo R&B tracks; "I Believe" is a "soulful" song influenced by Motown and "Missing U" is about "warm recollections" of a former love.

[11] Hosted by MC Dingdong, Voisper held a showcase for Wishes one hour prior to its release at the Ilchi Art Hall in Cheongdam-dong, a ward in the Gangnam District of Seoul.