Following the conclusion of Blackpink's Born Pink World Tour in 2023, Jisoo announced her departure from YG Entertainment for solo activities, establishing her own label named Blissoo in February 2024.

"[6] She co-wrote all four tracks on the EP alongside Jordan Roman, Jack Brady and several collaborators, while Blissoo and The Wavys produced all the songs.

In the six-second clip, a lie detector needle is shown scratching wavelength patterns onto graph paper, followed by an end screen with the date February 14.

[19] On the evening of the EP's release date, Jisoo held a two-session local fanmeet titled "Soo in Love" at the CGV Cheongdam CineCity in Gangnam.

[21] Crystal Bell of NME scored the EP four out of five stars, commending the record for its ability to highlight Jisoo's strengths, as well as its self-assured embrace of "pop's timeless pleasures", which she identified as "melody, emotion and a touch of mischief".