World Three: [Harry Potter, Marauders Era] The four of them aren't very familiar with the original work, so when they suddenly arrive in the Marauders Era, they're all completely bewildered. Who are all these people, and how are they connected?!
A newly born System accidentally binds itself to four people. It was supposed to be the most ordinary conquest story.
But... Hosts! Why aren't you following the script?!
[For the world order, see the author's notes or chapter divisions. Feel free to choose whichever world you'd like to read~]
