Gosh, this was a very interesting take on the myth of Orpheus!
First, I have to say I loved the ambience of the game: the music, the sound effect, the stair, the art style in general, even the GUI, everything came together wonderfully! The craft really is mastered!
The writing too was very good! To be honest, I've never had a pet, so I don't really know how deep this connection can be, but the theme of letting go of someone dead, I think, is something we can alas all relate to. And the game was a very neat exploration, I appreciated the evolution of the protagonist's psychology when they choose to move forward and to not look back.
But in the end, there is only one choice, and your take is part of my general favourite takes when it comes to Orpheus and Eurydice's myth: I love when Orpheus chooses to look back. Here, because he realises he has to let go and to move on; that we, somehow, all have a purpose and a limited presence on earth; and that it is selfish to ask others more than what they were meant to give.
Overall, this was an excellent game which made excellent use of the restrictions of O2A2! I really appreciated it, congrats!