I Decided to Die and Lovely Runner are deeply intertwined through their shared use of the "save me" time-travel subgenre, where both narratives feature a protagonist trapped in a time loop desperately trying to alter the past to prevent the tragic death of the person they love. In a striking parallel of character backstories, both dramas center on high school athletes whose life trajectories are shattered by physical trauma; Lovely Runner follows a gifted swimmer sidelined by a shoulder injury, while I Decided to Die centers on a promising Taekwondo player whose national team dreams are crushed by a severe leg injury. Their romances are defined by asymmetrical memories, as only one lead carries the harrowing weight of past timelines while the other is left entirely in the dark, experiencing past lives only through fragmented, confusing dreams. Both stories also utilize a dual-timeline structure that effortlessly bridges the innocence of high school youth with the complex, darker realities of their adult lives a decade later. Finally, the stakes in both series are amplified by a volatile butterfly effect, where every attempt to rewrite history inadvertently triggers a dangerous domino effect, placing the couple directly in the crosshairs of ruthless, violent criminals.
