Introduction: Ever since they were little, Cherri Kusuri and Gumi Kusuri have always lived in a world of their own, under the delusional belief that they are the only two humans left on Earth and that every single other person on Earth has been replaced. At all times, through their eyes, they can only see inhuman monsters, strange aliens, clunky machines, anthropomorphic animals, and other such miscellaneous creatures and phenomena. Like wolves in sheep's clothing, but the Kusuri girls were the only actual sheep.In this modern world, living with their "anthropomorphic hippopotamus step-father", the Kusuri Twins begin the next chapter of their unusual lives as freshman students attending a high school of creatures. Facing the challenges of trying to learn something from hard and/or boring classes, socializing with people they actually have to care about now, and more or less figuring out what else there is to life besides pretending nothing changed. A time to learn about the world around them, to finally make peace with the death of all humanity.And it all starts with the very... creative... Cherri, framing her diary as "telepathically speaking with some random guy after eating a bunch of strawberry mints in the middle of the night."(This is my Writathon 2024 work! I submitted the first chapter early, just so I can go right out the gate when the Writathon starts. Starting from Chapter 2, the 55k word count will be counted and worked on after 10-31-2024!Oh, and uh: [participant in the Royal Road Writathon challenge] !)...