I am in love with the setting, atmosphere, the game concept and especially Mumei's pixel art. I am speechless with the pixel art animations the smooth effects for the inventory and even a small animation of Mumei turning when reading a note. The concept is very interesting, with you forgetting things so you must discover and take notes to use the items.
The mechanics did have some quirks to it that may need some readjusting. It was kind of hard to remember to remind myself to memorize the items, and there were multiple instances where I kept forgetting to save my items, and then realizing to myself "Damn, I forgot to memorize the item's effect!" and losing it from my inventory. Then I head back, and then remember "Right, the rooms get randomized!". This coupled with the lamp limit might be a little counteractive (kind of whatTexellation mentioned). I think I got a hang of the mechanic a little more after going through the game for some time, but this can differ from player to player.
As others mentioned, there was some confusion with the tilesets (Like the third(?) room, there are certain areas you can go under), but that is a minor fix that can be tweaked through playtests so it isn't too big of a deal.
Such a unique game, I love the creative execution and the pixel art in this! I am excited for the future of it :D