What the Heck! I Somehow Survived the Apocalypse Thanks to This Thing

System + apocalypse + survival at sea + wish fulfillment: “Find, find, find my big brother.”

“Big brother, where are you? Little sister, finding you is going to be so easy. It’s all right, we’ll look together.”

Ding-a-ling! Side quest: Find your big brother and become the ruler of the seas.