[Quick Transmigration] Shocking! The Max-Level Expert Starts Over

(Strong Female Lead + Gradual Leveling Up + Light Mystery) The System always thought it had bound itself to a hopelessly lovestruck heroine who was pathetically weak. Who knew she’d get an exceptionally rare random System from the start, one that drops super “weapons” for completing missions? But right from the start, the System discovers it can’t enter this System world, so the heroine has to break through this hurdle on her own. With her genius-level intelligence, the heroine thinks she’s won from the start. But things go badly from the start: she hits a bug. The System thinks its host can’t turn things around, but the developments that follow leave it utterly stunned…