The game is gorgeous - visually, audibly; everything is beautiful.
I was getting so invested in the story but unfortunately I encountered a bug that froze the game. It happens when the wall painting becomes skew-whiff in the upstairs landing. The NPC bids the protagonist follow her downstairs, I think it is a move-route bug where the player has collided with the NPC. The easy fix is to check the Skip if Cannot Move box in the Move Route event which although will look janky will avoid freezing the game up when an event (such as the player) tries to move into an impassable tile (like a wall or Same as Character priority event such as your NPC.)
I will 100% give this another go if this gets fixed; I love this game - can't believe it is your first game, from what I have played so far (apart from the bug) it is nigh on a masterpiece.
