Jisoo announced her departure from YG Entertainment for solo activities in December 2023 and established her own label named Blissoo in February 2024.

[10] Writing for NME, Crystal Bell praised "Earthquake" as an evolution of the "magnetic syncopation" of Jisoo's single "Flower" with a "fuller, more dynamic production", which she felt enhanced the singer's vocals and helped her delivery feel "more assured and expressive".

[11] The official music video for "Earthquake" was directed by Christian Breslauer and released alongside the single on February 14, 2025 on Jisoo's YouTube channel.

[15] She is interrogated by an officer played by actor Cha Seung-won with a lie detector test about her true feelings for her love interest.

[17] On February 16, 2025, Jisoo performed "Earthquake" live for the first time on the South Korean music program Inkigayo broadcast by SBS.