The visuals and 3D models are so charming, and the fact you thought to add a death condition for walking into the ocean is a really nice touch. The BGM has a lovely Animal Crossing-esque feel to it too.
It's clear there was a lot planned for a short jam timeframe. I can see the seed of a really charming game here, but I found myself walking around the island without being able to figure out how to progress anything. Even a simple pop-up or short tutorial prompt would go a long way in helping players get oriented.
I'd really love to see this in a more polished state down the line. I think it could make for a genuinely great cosy game.