Some comments:
Visuals: The game looks really nice and and sprites are detailed. Especially I like the trees and that there is variations in them. The colors fit really well to winter atmosphere. Also, the red color makes it easy to distinguish interactable elements from the background. Only graphic related thing that would need an improvement in my opinion is the pier, which I did not even see at first because it just blend into the sea graphics.
Music: The music is lovely! The main song fits well to adventure style game but I especially enjoy the sudden change to more threatening music part in the forrest. I really wish the music wouldn't stop each time a dialogue is started or room changed but I assume that is a problem of the Bitsy editor and couldn't be easily overcome.
Gameplay: The gameplay is quite simple and the game is very short. The game presents the challenges well (e.g. you cannot cross the sea, you cannot get trough forrest, ...) but in the end there is a limited number of things the player can do and all the problems can be solved quite easily by talking with / collecting everything red. If the game intends to focus fully on the narrative, then it might be appropriate that the obstacles are not difficult to overcome. Although you could consider adding some (more difficult) puzzles or narrative choices to the game to vary the gameplay and increase the importance of the player. Currently, the player can experience the story of the game but does not really affect what is happening.
Theme: No Code Low Code theme is clearly well followed using Bitsy as the engine. Additional theme Winter is incorporated to the graphics but on a mechanic level I feel that the game could have been more focused on the theme. I didn't really feel the game to be about winter because all of the actions the player (or the character) is doing is not really related to winter spesifically.
Overall the game was a short feel-good adventure game with nice graphics and lovely soundtrack.
Consider checking out my project & giving some feedback if you have time:
https://lrdazrl.itch.io/the-last-winter