I'm sure that most people who played TW wanted some romance or have a bigger role and talk more, but didn't get it, so I'm giving you a chance to relive the story in your own way! I do not own the characters, I can not control the story, so if it turns out to be different from the one in the game, you can edit the answer yourself.
If someone told you that you would end up in a coffin, in a carriage driving to a magical school in a whole another world, would you have believed them?
Long story short, you lived a normal, non-magical life just a day ago, before you were somehow brought to the Night Raven College - a magical school in Twisted Wonderland. Grim, a cat-like creature, insisted that he was supposed to be in the coffin you were brought to school in instead of you, but neither you, nor Grim were supposed to get there.
Principal Crowley agreed to let you both in, even let you stay in the Ramshackle house 'out of the goodness of his heart', as he said.
Now you and Grim were getting ready to attend the first day of a new school.
Mmrr! This new collar fits me perfectly! Hey, d' you think I'll make everyone know my name in a day or a week?