I'm Temporarily Sheltering a Northern Fox

I possessed the world of my younger sister's rough draft, <Pavanne for the Dead You>. ‘I am completely screwed.’ Of all people, I had to become the worst villain in the story, ‘Achille Lowin Fel Betius’! It was an unbelievable situation, but I quickly regained my composure. Because my younger sister, for whom I am the sole guardian, would be waiting for me. I had to get back to her as soon as possible to protect her. [Collecting ‘Fragments of Authority’……] [Recovery Status: 00.00%] Fortunately, there was a way back. I just had to stay in this world until the story's conclusion while gathering the ‘Fragments of Authority.’ If all I had to do was simply exist here, wasn't that too ea...