You don't remember much, but you do remember drinking something and taking a nap on an unfamiliar couch.

You wake up, tiny, on the giant couch. There's a small book in front of you, telling you how to survive a giant elf girl. You look up to see Luna, an elf who is normal sized, but appears giant to you.

Luna closes her book, learning "How to tease a tiny one". She reaches for you.