This is easily my favorite concept I've seen on this gamejam. Really liked the whole idea, execution is also done quite well, though obviously a bit rough. I would love to play a more finished and polished version of this game!
As some feedback - notebook needs to be more easy to use, I've been struggling to find correct letters. In exchange, you could add mechanics that make you lose letters, or make some letters change numbers if you went into some room. Definitely more healing items required, I've been searching for sushi like crazy. Also obviously more rooms would be great, but you can only do so much in 7 days.
Really great game! Good job!