Parasyte looks at the world of Shinichi Izumi, whose life takes a huge turn for the worse when parasitic aliens invaded his city causing extreme chaos. These aliens burrow themselves into the brains of vulnerable humans, using their body as a shield and can morph into an array of forms to feed on other unsuspecting targets. One of these parasites finds its way into Izumi's body, but fails to find his brain and ends up in his right hand instead. The parasite named Migi tells Izumi of the threat that these parasites pose to the Earth, and so the two must work together hand in hand to put an end to the threat, while relying on each other to stay alive.

Izumi and Ken have both been thrown into a world where they never expected themselves to be in, which led to an extreme life changing experience. They both were the victims of an attack which cursed them with a power that took over a part of their body. The two must now come to terms with their new destiny, while also understanding how to fully utilize their new forms. Izumi undergoes a huge change in his character once he realizes how much of his life is affected, and how big of an impact he has on the world around him. Now Ken and Izumi have to both rely on tactical measures in order to outsmart their opponents, who too also have extremely intelligent strategies to be one step ahead. It's a huge chess match to see who can perform the checkmate first before it's too late, and that's what brings the excitement to the series.

Deadman Wonderland throws you right into the action, as we see Ganta fighting for his life within the first few episodes. Ganta finds himself in the midst of struggle as he is framed for a gruesome crime at school he didn't commit. His entire classroom is butchered by a mysterious individual in red, and it's now Ganta who must find out who this enemy is while at the same time, keeping his head atop his shoulders. Ganta encounters a mysterious young girl named Shiro, who teams up with him in order to run through the gauntlet of deadly events at the prison. Ganta must now use his wits along with strong teamwork to get him out of the situation he's in and bring himself one step closer to the answer.

Both anime involve a young boy whose life takes a turn for the worst when they're thrown into an unexpected scenario without their consent, and must now come up with ways to survive at all costs. Ken and Ganta have been shunned from society and are seen as the enemy, and now must try and convince the world around them that there's a greater threat ahead. Brutal murders constantly take place in both anime, where the weak are weeded out from the pack, and the strong continue to dominate. These shows give us a glimpse real life problems that we currently face in society, where segregation and neglect run rampant and now the world needs immediate change before it escalates.

Ajin tells the story of a species of the same title that had been tracked down in Africa. Ajin are said to have immortality along with supernatural powers, but behave just like any normal human being. Since its first discovery, more and more Ajin have found their way into the present world, and Kei Nagai is one of the characters who encounters one in a tragic way. After walking home from school, Kei is killed instantly by an oncoming truck, but is revived by a mysterious dark matter. After rising from the dead, the towns people immediately targeted him as an Ajin, and from there the action begins. The anime tries to express some complex truths about life and death, while showing us the more dark side of human nature along with it.

Kei and Izumi suffer at the hands of another by some tragic event, which leads them into a world they never asked to be a part of. They both have transformed into a completely different being, allowing both protagonists to revive themselves after being killed. They both must now use these new forms as defense mechanisms to help put an end to the constant terror that threatens their city, but to also protect the ones they care about. Neither characters posed a threat to the world prior to their curse, which was undeserving, but now are both targets by humans because of their accidents.

Mirai Nikki is a supernatural thriller produced by Kadokawa Shoten, which places focus on Yukiteru, who soon discovers that his habit of conversing with imaginary friends through his cellphone (his diary), eventually becomes a terrifying reality. By fate, Yukiteru is confronted with a girl named Yuno who he builds a romantic connection with throughout the series. This close relationship however eventually becomes a survival game, where both Yukiteru and Yuno must eliminate their enemies while using their equipped diaries, that allow them to assist one another in this fierce battle conducted by God himself. The winner is rewarded with the throne, becoming the ultimate leader of the universe.

Kei and Yukiteru get pulled into a world that they never wanted to be in, and must now roll the dice playing the game pertaining to life and death. The two must contemplate their intentions as they must risk taking the lives of others in order to survive, while encountering enemies who show no remorse to kill them. Their every decision leads them down various paths which they must evaluate, and see what solution prevents them from dying the fastest. Kei and Yukiteru start off quite weak early in the series, but as the story progresses they too find strength in their ability to stay alive at all costs.

Mirai Kuriyama is a member of the Spirit World warriors, who wield the power to employ their blood as weapons. Mirai is given the task to track down and kill creatures known as “Youmu”, who are said to take the appearance of negative human emotions in physical form. Mirai encounters Akihito Kanbara, a rare half-breed of Youmu in human form. She plunges her blood saber into him in a state of panic, only to realize that he's been granted immortality. The two form an unscripted friendship from then on that revolves around Mirai constantly trying to kill Akihito, to boost her confidence as a Spirit World warrior.

Akihito and Kei are both half-breeds which allow them to utilize the powers that their enemies use at any time. This however leads to them becoming the hunted instead of the hunter because the world sees them as different, and must now be eliminated as a result. The two must come to grips with their new powers, and somehow find solutions to use them effectively in order to survive. There's always an obstacle that they must face which challenges their sanity, since they must sacrifice one thing for another at all times. Extreme decision making have become the responsibility of these two main characters, and whenever they're faced with dilemmas the two must always use their correct judgment, otherwise they suffer.

Robin is a 15 year old craft specialist who came to Japan from Italy, to work for the STN- Japan Division. She was to replace a member who was killed in battle, and so it became her mission to capture witches alive to further discover why they became witches in the first place. In a world full of betrayal, Robin is on a journey to not only uncover the mysteries of the existence of witches, but to uncover the dark pasts of her own life leading up to Japan. Robin comes across a male individual named Amon, who she becomes attracted to, and the two work together to chase conspiracies. Amon shares somewhat of a similar dark past to Robin, and so her mission is to dig into his life to find more answers.

Kei and Robin find it extremely difficult to fit in with society because of how different they are. They both resemble the look of a human, but possess abilities that surpass the human capability. Whenever confronted with the choice of choosing a side to fight with, the two find it very hard and are always constantly running back and forth trying to decide. Both Kei and Robin enlist in an organization that will help them to put an end to the threat that the two never expected to be a part of in the first place. So now with their life in a whirlwind of affairs, they must now collect all of the pieces to the puzzle and place them together to find the right solution.