The end of the world, literally (invasion) Caspar x Elsie

A British girl named Elsie Johnson has a harder life than some may realize, she has abusive parents, no mom, and has these so called visions of aliens invading earth. She has told no one about them, not even her best friend Casper Morrow. She has a big crush on him, but she just does not realize it yet. But, on a school field trip everything, and I mean everything goes downhill.