It doesn't get past the screen with the text for me. Sounds are still playing but nothing happens.
EDIT: Finally found out you just have to press Z.
The atmosphere of the game is great, but what you are meant to do is a big question mark. I don't know if there are any hints in the game, but all I seem to be doing is move my cursor around, hoping something would happen. And when something does happen, I have no idea why it happened. The time between the TV interactions feels very short too. It would be nice if you were rewarded by hitting the TV minigame in one go by having more time before the TV activates again.
I managed to get the first activation (Spoiler: Guy coming through the mirror) but after that I only managed to get a single "black flash" interaction on the left closet door but never got to trigger it again. Which is a shame because the game looks great and I would have loved to get further through it.
Congrats on submitting to the jam anyway though !