Living in the Black Sea, I Live Forever by Feeding People

Raise crabs, increase the clamping force by one, and you can break gold and stone with your hands. If you raise blue-scaled fish, the scales will be increased by one, and the skin can be converted into fish scales. If you raise a turtle, your lifespan will be increased by one and you will live forever. . . . . When humans come, I am the formation master, when monsters come, I am the fish monster, and when monsters come, I am Cthulhu.