"Systolic" was conceived in the aftermath of K.A.L.I.L.'s experience with a stroke. During his hospitalization, he meticulously captured the rhythmic cadence of his own heartbeat during a medical examination, intending to incorporate this unique audio into a potential musical composition. Endeavoring to articulate the myriad emotions he grappled with during the challenging days when half of his body was nearly paralyzed, the song came to fruition.