The pixelated environments are nice and fit well with the soundtrack. I like the little background effects and parallaxes. I'm in two minds regarding the style switches. They definitely give the game a unique look and make each of the scenes more pronounced, but they do cause some confusion regarding the characters. It might be more harmonized if the platformer sprites also changed colors and styles between environments to match the animations? I would also like to see more player controls regarding starting and stopping animation playback, instead of the automatically starting when you get close.

The sexy moans are nice, but are a little too frequent and repetitive. Slower repetition or variety would make them fit the game more. Small sound effects for other actions like jumping may also be nice. I also think that the sound effect volume could be just a tiny bit lower to give the game more of the ambient mood that it's aiming for.

There are a lot of minor bugs. The text is  cut off for me. Parallaxes keep scrolling at the edge of the screen and don't fully match the speed and direction. Some dialogue scenes will replay if you re-enter an area. 

I would recommend a faster walking speed for an exploration themed game. It's fine for the three areas that are in the game right now, but that might not be the case if you expand and add more backtracking. The jump feels awkward due to the very high vertical speed combined with the slow player movement.

The presentation just needs a bit more polish and unity, but it can definitely become something fun and special. I would love to see this grow into a full platformer adventure with a unique look and animation style!