Check your answer here
Click on the Wyrm icon in the bottom-right for a hint!
YOU FOOL

YOU HAVE FELL RIGHT INTO OUR TRAP
THE MATE AI WAS JUST A DUMMY WE BUILT TO LURE YOU INTO OUR DIMENSION
THERE IS NO WAY OUT NOW. YOU ARE NOW PRISONERS TO THE MIRROR OVERLORDS.

Oh no! You are now trapped in the Mirror World! The only things you brought with you were your answers!
...Wait, that's it! Things! Your answers are things! They must have some sort of function that can help you!
Additionally, isn't it kind of fishy that the Mate AI, and these "mirror world" beings claim to have no weakness? I think it's time to figure out what their true weakness is, once and for all.

First things first, find the things that your answers contain. They may contain: nothing, something, everything, or just things. Good luck!

Film by (???): - ?????(!!!!!) ????????(8)? ??? (9)? ??(3)?
Play by (???): - ??(10)? ?(7)? ?(1)?(11)? ??(!!!!!)
Song from (???): - (5)? ?(13)?????(2) (!!!!!)?
Poem that ends with "(???)": - ????(!!!!!) (4)(12)?, ????(!!!!!) ?(6)?

Solved by

List of users who have solved the puzzle. Users with  moreberries next to their name are verified solvers. Users who have  okin hardberries have solved the puzzle during the judging period of Challenge 4. This list is not a puzzle.