Fishing Master: Giant Terminator

I quit my job in a big city and returned to my hometown to relieve stress by fishing. One day, I caught a giant freshwater fish weighing 100 pounds, which caused a sensation. Fishmongers and rich people came to buy them at high prices. I used the money from selling fish to purchase fishing equipment. So I went around looking for rivers with giant objects and fished for giant objects. In the end, I successfully caught giant objects of hundreds of kilograms, giants of thousands of kilograms, giants of ten thousand kilograms, giants of millions of kilograms...