Cool game! I'm not a big fan of visual novels bit this looks like a lot of time and effort went into it.
I liked the story, art and music a lot.
though I personally thought that the main character should talk a bit less, he ends up overexplaining a few things and takes away some of the mystery. I also caught a typo the second time entering the living room. He says "I'm feel a little sleepy" obviously that doesn't bring the score down for me but I thought I'd mention in case you ever go back to edit some things.