Darker than Black

Genre: Action, Mystery, Sci-Fi

The story sets in Tokyo. A strange phenomenon known as " Hell's Gate " appeared, altering everything around even the sky. After this incident some individuals known as " Contractors " have emerged. They possess various special powers at the cost of their humanity and work for agencies, as spies or assassins . Hei, the main protagonist, is one of them. The main difference between Hei and the other contractors is that he still retains his human emotions. The emptiness of these non human personalities that live in this dark world, make an intense impact and induce motions to the viewer.
Mirai Nikki

Genre: Action, Drama, Thriller, Mystery, psychological, Supernatural

Yuki Amano lives at a state with no friends, his only interaction is with his imaginary friend Deus, who is the god of space and time and Deus's servant murmur. One day Deus gives Yuki a diary that can predict the future and make him participate in a game. In this game there are eleven more people, in which everyone has in their possession a diary that predicts the future in different ways and have to kill the other. There has to be only one survivor before the world ends to become himself the God of space and time. Mirai Nikki is a psychological thriller with violence and gore that will keep you till the end.
Code Geass

Genre: Action, Mecha, Military, School, Super Power

The world is set in an alternate futuristic version of our world, where Japan has been conquered by the Britania Empire. Lelouch, an exiled prince of Britania finds himself in the heart of a conflict between the remnants of a rebellious group who seeks the independence of Japan and the Britanian authorities. There, after meeting a mysterious girl named C.C., Lelouch gains the ability to force others to do his will. Now By acquiring this power he will try ti bring down Britania. At the end of every episode you will find yourself clicking the next one as you will want to see how the story evolves.
Death note

Genre: Mystery, Police, Psychological,Supernatural,Thriller

Light Yagami is a genius student living in a city with increased crime rate . After class he finds a notebook entitled with the name " Death Note ". He discovers that it has the power to kill everyone who their name is written on it. The notebook was dropped to the human world out of boredom by Ryuk, a shinigami(death god) who becomes Light's companion. Light plans to make a world free of criminals and start his killing spree by the name Kira. Interpol and the genius detective " L " get involved and things fire up.It is a constant game of cat and mouse as the two of them anticipate each others actions. The show has great suspense as you can never predict what is about to happen.
Shingeki no Kyojin

Genre: Action, Drama, Fantasy, Thriller

It is set in a world where humanity lives in cities surrounded by enormous walls. The majority of the population was exterminated by titans. The remaining humans living in this fortified region haven't seen any titan for over 100 years. This all changes when one day a huge giant appears and breaches the outer wall of the city allowing smaller titans to get in. They devour humans not to feed themselves but out of instinct or for pleasure. A teenage boy Eren and his foster sister Mikasa witness their mother getting eaten alive and seek revenge. There is gore (especially on the first episodes), emotional scenes and titans that are beautiful made to look twisted, powerful and Horrifying.
Monster

Genre: Drama, Horror, Mystery, Police, Psychological, Thriller

Dr. Kenzo Tenma is a renowned brain surgeon working in Europe. Everything in his life seems to work out. One night two patients arrived in a critical condition at the hospital. A young boy along with his twin sister and the town's mayor. Dr Temna despite the pressure by his superiors to save the mayor's life, he operates the child first. He saves the boy but the mayor loses his life and Temna his social standing. A series of murders occur making Temna a suspect. He finds out that the young child that he saved is guilty of them and he starts a journey to find the true identity of the boy and clear his name. The show analyzes a psychopath killer in depth. Occasionally seems things to get slow on the show but this is happening in order to establish the characters.
Steins;Gate

Genre: Comedy, Sci-Fi, Thriller

The story of Steins;Gate takes place in Akihabara and is about a group of friends who have customized their microwave into a device that can send text messages to the past. As they perform different experiments, an organization named SERN who has been doing their own research on time travel tracks them down and now the characters have to find a way to avoid being captured by them. The show is funny but at the same time emotional. The plot is well written and include time traveling concepts and theories.