Attack on Titan. 10

FORTRESS OF BLOOD With no combat gear and Wall Rose breached, the 104th scrambles to evacuate the villages in the Titans' path. On their way to the safety of Wall Sheena, they decide to spend the night in Utgard Castle. But their sanctuary becomes a slaughterhouse when they discover that, for some reason, these Titans attack at night! PRAISE FOR THE HIT ANIME "A visceral and fantastically intense action/horror story." - Anime News Network "Japan’s equivalent of The Walking Dead." - io9