Okay, so, before the review, a quick warning: on Firefox, I just had a black screen with music, no game at all. Switched to chrome and I could play the game, but it was very laggy. Thank god I found your performance build, and it was nice ^^.
SO it was tedious to play, but it was worth it =p! I enjoyed the atmosphere, creepy but without relying on jumpscares, that's really good. The gameplay is simple, but the moth mechanic is a nice twist, even if it took me a while to understand (yeah, the beginning message is cool, but a bit criptic xD).
The game fits the theme well: too many games rely on just having two characters and that's it, but you went for the full interpretation with the atmosphere and the story, that's a very nice touch.
Overall I enjoyed the time I spent on your game! It's really well done, especially for a first game, congratulations!