I really like fishing games, so it's nice to see one here! I really love the art style, it's the stand out feature here and is very cute! I like that the theme as been implemented as buying upgrades for the fishing rod, although after a certain point it makes the controls feel quite slippery. I like that you have included multiple endings too, to further add to the theme with how the endings cost you based on your actions through the game.
although there appears to be some scaling issues with the text getting cut off on the title screen.
I would've liked if there was a little more too it with the fishing and upgrades like maybe there could also be a shop on the map where you can buy bait to catch specific fish or obstacles in the water to avoid? I also think some music and sound would add to the experience.
Pretty good effort overall though! :)