Wonderful entry! Superb voice acting and very nice music. I also liked the cute graphics - they were perfect for the overall feeling of the game. The concept reminded me of Firewatch, but with a more twisted ending :) the messages really help to break down the monotony fishing
If I had to give some small suggestions - you get a sound for successful fishing when you hit e correctly, but the sound of the rod getting up is much more noticable and it's the same if you suceed or fail. Also, I thought there is not much point to progress to deeper waters before upgrading the more expensive rod - since half of the fish in the deeper waters require it, and you have access to the less valuable fish already
But those are nitpicks for a really charming entry with perfect length. Good job!