Two best bros, two rocking sisters. Not really relatives, though. They'll find that when the end of the world dawns, the people that they can most depend on are each other. L4D/HS crossover. Rated T for violence and language. [STORY ENDED]
Rated: T - English - Adventure/Romance - Chapters: 3 - Words: 5,091 - Reviews: 14 - Favs: 9 - Follows: 17 - Updated: 5-13-12 - Published: 11-5-11 - Complete