The hidden Room behind the bookshelf

"I was in my apartment, or close enough to it, and noticed the bookshelf in the hallway sat slightly crooked, which it never does, and pushed it aside without much thought, and there was a door behind it, one I was somehow sure had never been there before. That discovery feeling hit immediate, this buzzing need to see inside. I opened it and the room beyond was way bigger than it should've fit, furniture I'd never owned, light coming from nowhere obvious, and instead of questioning it I just wanted to explore every corner right away, that excited pull dragging me from one thing to the next. I found drawers full of objects I didn't recognize but felt oddly thrilled by anyway, picking things up, turning them over, this sense that something important was about to click into place. kept moving faster through the space, wanting to see it all before it disappeared. I tried to find the door again to show someone and it had shifted, now behind a different wall, which only made the excitement spike more, like the room was playing along with me. Woke up still holding onto that buzzing curiosity, wanting to fall back asleep and find it again."