If it can go wrong, it's happened to Tristan Shay.

After his mother dies due to illness, the friendless, twenty-two year-old college dropout is forced to live on his own in an old house he's renting just outside of the city. One day, he receives a scroll in the mail from someone who calls their self "Princess Celestia", saying something about seven guests who will be taking a month long field trip to "his" world. This has to be the weirdest prank mail he's ever gotten...

Very first story ever. No sad rating due to only a few paragraphs of sad stuff that comes later in the story and the Teen rating is for light sexual content and possible flirting/shipping. Constructive criticism is always welcome :)