The visuals are STUNNING. The music is BEAUTIFUL. They fit the game so so well and the art is just mesmerizing to stare at, especially with the light effects you made! The voices are cute and really helped me figure out what to do. The game felt very much like a lovely interactive storybook.
I really wish there were more mechanics to the game, maybe a specific ability for a specific obstacle in the forest, or something about light. The characters being elements is not really that relevant to the game, as the goal is to defeat darkness, so adding a light ability corresponding to each element I think would be better. As mentioned by others, a way for the other elements to follow the element you control would really help the game feel more fun and make the game more relevant to the theme(Instead of moving together, you only move as one in this game). Other than that, the game is really impressive for a jam game and if you ever decide on continuing this game after the end of the jam, I would love to see it, even if it's just a short polished beautiful game!