Wasn’t I Supposed to Survive in the Wilderness of Another World?

Two retirees, an old man and an old woman, were living off their pensions and preparing to enjoy a peaceful retirement. Then the world tossed them into another realm and stranded them on a deserted island. This story is entirely fictional. Any resemblance to actual people or events is purely coincidental. Fortunately, both of them regained their youth. Resources are scarce in this other world? No problem. Granny Su has awakened a pocket dimension. If the pocket dimension came too late, then they’ll just empty out their home and bring everything along.