I couldn't find the other one anymore, and forgot who had a link to it. So theres been an anime out, that some say it's better then Attack on Titan. Theres only 3 episodes out atm, it's getting better and better! It's called Kabaneri of the Iron Fortress, if you haven't already check it out! Summary: Spoiler As the world goes through the middle of an industrial revolution, a monster appears that cannot be defeated unless its heart, which is protected by a layer of iron, is pierced. By infecting humans with its bite, the monster can create aggressive and undead creatures known as Kabane. On the island Hinomoto, located in the far east, people have built stations to shelter themselves from these creatures. People access the station, as well as transport wares between them, with the help of a locomotive running on steam, called Hayajiro. [Ikoma], a boy who lives in the Aragane Station and helps to build Hayajiro, creates his own weapon called Tsuranuki Zutsu in order to defeat the creatures. One day, as Ikoma waits for an opportunity to use his weapon, he meets a girl named [Mumei], who is excused from the mandatory Kabane inspection. During the night, Ikoma meets Mumei again as he sees Hayajiro going out of control. The staff on the locomotive has turned into the creatures. The station, now under attack by Kabane, is the opportunity Ikoma has been looking for.