The pixel art is cute. But you still need to work on your walk cycles, they seem a bit choppy. The music and the snow storm special effect create a really good atmosphere.
The character writing isn't bad either. Even though the game drops me pretty in-media-res without explaining anything about who the characters are and what their relationship is, it manages to give a pretty good picture of the character dynamic over the course of the short narrative.
The mechanic of putting the player back all the way to the beginning when they pick a wrong exit is indeed a huge waster of the player's time. It could be fixed by simply putting the player back to the room they came from.
Not sure why everyone acts as if having sex in a game that does not involve the player-character, or "NTR", is such a taboo subject for some people. In worlds where all the characters are horny, it's just natural that the PC isn't the only one they want to bang. Observing romance and sex among NPCs can be just as hot as having the self-insert protagonist be involved themselves.