[ asdflkjh tfw my memory is so bad, people are surprised when I do remember things, all I remembered was Maya wanting to shove Natsume off the roof and then had to go find the thread to see what the other conditions were

Maya remembers everything, though, like when they'd walked up the stairs to the roof that first time, just before this door they're coming up to, and Natsume hadn't fallen out of pace with her back then. ]

That depends on your definition of strange. Past this is storage space, officially, but it's more akin to a cemetery. If you feel anything weird, you're just being caught in the atmosphere.