Teddy was born eleven days before the Battle of Hogwarts, but Remus and Tonks don't know how much time they have. They just know know they've got to give Teddy all the love they can in a short amount of time. So, here's a glimpse into those last eleven days of the Lupin family, where they teach each other that the ones who love us never really leave us.
Did you ever notice how many similarities there are between Colonel Brandon and Severus Snape? It's more than just a coincidence, and Snape is about to discover that for himself... (I took the serendipity of Alan Rickman's presence in Harry Potter and Sense & Sensibility and made it into a crossover. Not to mention the mutual presence of Trelawney, Umbridge, and others! Enjoy.)
'Create a Harry Potter story! e.g. Harry Potter and the (color of an object to your left, and the object to your right.)' That's how this started. That's why the title is funky. The innocent 'title challenge' turned into a story containing serious feels for Severus Snape, and Harry Potter trying to turn into a mermaid. Merman. Whatever. Set during the Goblet of Fire. One-shot. :)