You've crafted a lovely experience here. While text-heavy games such as this aren't usually cup of tea, the story kept me engaged. The music you've chosen pairs well with the pacing and lovely art of the game, and the different tracks suit each scene nicely. It's got a very nice, relaxing vibe.
Like someone else mentioned, the gameplay was a bit repetitive as there wasn't much to do other than click. Perhaps the fishing portion of the game could switch things up? Also, I managed to catch a few fish, but then they stopped biting so I'm glad there was the skip fishing option 😅.
I'm keen to see how memoria castaway develops and where you plan to take it. At the moment it's a promising start to something really intriguing. Good luck in your plans to develop this one further!