Fishing by the Sea: I'm Just a Fisherman, So Why Do They Call Me the Richest Man?

Everyday life + beachcombing + tycoon vibes. While enjoying a trip to the seaside, I accidentally fell into the water. When I opened my eyes, the good news was that I'd been reborn in the year 2000, when the country was rising at breakneck speed. The bad news was that my family was buried in debt... All I could do was grab a bucket and return to my old line of work from my previous life: beachcombing... But what was this interface in front of me? Why was it insisting I head south? Gradually, I realized that following its directions let me find all sorts of good stuff, like sea cucumbers and crabs... From then on, my life went into cheat mode! Now I'm going to make it to the top of the world!

The blurb doesn't do it justice. Please read the story.