First things first: the visuals and audio are amazing! Genuinely fantastic atmosphere. Never knew I wanted a haunted DS game, but here we are. Also Germain is great and hope to see more of him!
Little nitpick: When turning 90 degrees, the interact prompt will display if you turn past an interactable object. Makes it seem like you can turn 45 degrees to interact with it.
Will there be additional dialogue when talking to an NPC for the second time? I tried talking to the killer a couple of times, since he seemed important. If not, a skip feature for already read dialogue would be neat.
But overall I'm really impressed, keep up the good work!