Master of Monster is the TAFL-listed fanlisting devoted to the relationship between Alucard and Integra from the anime and manga series HELLSING.
A fanlisting is a website where people who are fans of a subject — a book, movie, singer, TV show, actor, character, etc. — add their name and country to a list along with other fans of the same subject. It's a fun and easy way to show your fandom, and to see how many people from around the world share your interests. You don't need a website in order to add your name to the list; all you need is an appreciation for some aspect of the relationship between Alucard and Integra.