[1] The album yielded three official singles, the digital exclusives "Edge of This World" and "Life in Harmony", and the sole physical release "Kioku".

[3] Misia stated in an interview with EMTG Music that the theme for the album was "modern soul".

[5] Several songs off the album received commercial tie-ins: "Subarashī Mono o Sagashi ni Ikō" and "Manatsu no Chameleon" were both featured on the AX variety show Himitsu no Kenmin Show,[6] while "Ame no Sonata" was used in H&S commercials,[6] and "Kimi ni wa Uso o Tsukenai" in commercials for the japanese financial company Gaitame Japan.

[7][8] Soul Quest entered the daily Oricon Albums Chart at number 4, where it also peaked.

[9] It debuted at number 7 on the weekly Oricon Albums Chart, with sales of 20,000 copies.