Rin Okumura is a teenager who discovers that he and his twin brother Yukio are the sons of Satan, born of a human woman, and he is the inheritor of Satan's powers. Due to this, all hell breaks loose on him and his friends.
To save the planet from extinction, the group Fenrir deploys teams armed with special weapons called God Arcs to destroy the monsters. It takes the average horror series and turns it into a super-realistic CGI with brutality that will take your breath away.
Shape-shifting demons known as "youma" arrive in Raki's village, accompanied by a lone woman carrying only a sword known as a Claymore. She is manufactured as half-human and half-youma to exterminate these monsters. In the aftermath of the death of Raki's family, Claymore saves his life, but he is exiled from his family. Raki has nowhere else to turn, so she follows the Claymore on her journeys.
The plot revolves around an organization called Hellsing that hunts down supernatural forces that prey on humans. The organization is led by a powerful woman who commands an army. Her greatest weapon is a vampire named Alucard. Alucard's new vampire servant, Seras Victoria, used to be a cop before he saved her life by turning her into a vampire.
The anime revolves around human-eating monsters called Kabane. Infecting humans with just one bite is more like zombies. The story takes place in a fortress built to protect humanity from monsters. At the beginning of the story, the monsters break into the fortress. Like Eren, the main character also becomes a sort of monster-human hybrid.
Goblin Slayer tells the story of an inexperienced adventurer who is also a priestess. She joins a group of guild members to take on a contract job. Sadly, everything goes wrong and everyone is killed. She only survives due to the heroic rescue of the mysterious "Goblin Slayer.". He is an adventurer who only kills goblins.
Castlevania is an animated horror-action-adventure series set in a dark fantasy medieval Europe. In the story, Dracula falls in love with Lisa Tepes, who has been accused of witchcraft and sentenced to death. When Dracula learns of her death, he goes into a blind rage and gives the city one year to evacuate.
A ghoul's organs are donated to Kaneki during a surgery where he becomes half-ghoul. Consequently, he must learn how to live with his new body. The protagonist is a hybrid monster-human like Eren. But they look like everyday people, but ghouls eat human flesh to survive. Also, they have superhuman-like abilities and can go berserk if they get too hungry or excited.
Like Attack On Titan, Black Bullet focuses on a similar theme. A threat from the outside, capable of making humans extinct if they do not take action. These creatures are called Gastrea in Black Bullet. The Civil Security unit is formed as a response to the Gastrea.
Edward and Alphonse Elric search for the Philosopher's Stone, hoping to restore their bodies, which they lost when they tried to resurrect their mother using alchemy. They discover that there is a plot to transmute the entire country for reasons they cannot fathom.
The story follows Lena as she commands a squad of drones called the 86. There is a war raging against machine drones known as The Legion in The Republic of San Magnolia. Through their own autonomous drones, the Republic boasts that they can fight a battle without any casualties.