@FlufflePuffett In the Anime season 2 is just an extra storyline to add more content. Personally i don't think you have to watch it to continue the series, especially if you just want to follow the manga storyline in the anime. But Alois is another young boy who sold his soul to a decidely more revolting demon for revenge and harbors an obsessive interest in Ciel. Thus their paths meet and intertwine and there will be many twists and an unexpected end. Trying not to give spoilers so i think i will end it here. It's the best i could do. Hope this helps. Even if it is 5 years later . . . Hahaha