Really fun game! It was cool seeing all the different art styles at play here. The gameplay loop is intuitive and relaxing, and I really enjoyed the twist at the end! I also appreciate how many settings and accessibility options there were, including the ability to remap controls and adjust the sensitivity of the mouse.
Control wise, fishing sometimes felt a little bit awkward with having to drag down the mouse to cast the fishing line, mainly because the mouse starts in the center of the screen which limits how much room the mouse has to drag. Maybe you could change it to just holding the mouse button down to increase how far the fishing line will go after you release the mouse button?
Besides that, really nice work on this one!