Who Threw Me Onto a Desert Island to Be Reborn?

[Deserted island] [System] [Multiple heroines] [Survival] When you're down on your luck, it's not just a matter of choking on a sip of water. Even if you walk carefully along the roadside, a flowerpot tossed down by some lunatic living on the eighth floor could kill you. We're all reborn, so why am I the one starting out on a deserted island? We've all got a System, so why is mine the worst in history? Ding! [Host, there's a mission by the beach. Hurry over and rescue someone to claim your reward. It's a girl!] Who was it that sent me back to life on a deserted island again? So it was her! (The story has plenty of heart and substance. Please be patient and keep reading.)