*warning* watch these and you won't sleep again until you're done watching :
D.Gray-man
Synopsis
Towards the end of the 19th century, Allen Walker officially joins the organization of Exorcists that destroy the beings known as Akuma; mechanic weapons made by the Millennium Earl with the suffering souls of the dead.
Allen has both a cursed eye and an anti-Akuma weapon as an arm, bearing the power of "Innocence", a gift given to him as an apostle of God. Allen, along with his fellow Exorcists must put a stop to the Millennium Earl's ultimate plot that could lead to the destruction of the world and all who live on it.
Read more at
http://myanimelist.net/anime/1482/D....uHEW8Jgcz1E.99
Nurarihyon no Mago
Synopsis
Rikuo Nura appears to be an average middle school student. No one knows that he comes home every day to a house full of youkai, nor that he transforms into the all-powerful leader of these spirits at night.
However, much to the disappointment of many, Rikuo is determined to live as normal a life as possible.
Read more at
http://myanimelist.net/anime/7592/Nu...jyMPWKO1Ihp.99
Btooom!
Synopsis
In the blink of the mind's eye, Ryouta Sakamoto suddenly finds himself transported from playing the hit Btoom! video game to being stranded on a mysterious island, equipped with a day's worth of provisions, a bag of bombs, a strange crystal embedded in his left hand and a huge gaping hole in his memory. But it doesn't take long to figure out what's going on, especially after the first person Ryouta meets tries to kill him. Someone is attempting to recreate the ultra-violent Btoom! game in real life, and the island has been filled with an army of other unwilling players, each armed with one of the multiple variants of explosive weapons called BIM. Fortunately, Ryouta's an ace Btoom! player, but this insane version of the game has no reset switch or second lives, and there's only one way off the island: kill seven other people before they can kill you! Can Ryouta repurpose his game based skills fast enough to survive?
Read more at
http://myanimelist.net/anime/14345/B...kHe5KzW4b9P.99
Devil May Cry
Synopsis
Devil May Cry follows the story of the demon hunter known as Dante. As a half demon, half human, he uses his trusty sword Rebellion and his two guns Ebony and Ivory to take on missions.
Dante owns and runs "Devil May Cry", a business that specializes in hunting and killing demon-related problems.
Based on the video game series "Devil May Cry".
Read more at
http://myanimelist.net/anime/1726/De...2DLu0Kor4Il.99
********************and now the epic ones *****************************
Fate/Zero 1 and 2 <<
contains 2 seasons
Synopsis
Fate/Zero takes place 10 years prior to the events of Fate/stay night, detailing the events of the 4th Holy Grail War in Fuyuki City. The War of the Holy Grail is a contest in which seven magi summon seven Heroic Spirits to compete to obtain the power of the "Holy Grail," which grants a miracle. After three inconclusive wars for the elusive Holy Grail, the Fourth War commences.
Founded by the Einzbern, Makiri, and Tohsaka families centuries ago, the Einzbern family is determined to achieve success after three successive failures, no matter the cost. As a result, they have elected to bring the hated magus killer, Kiritsugu Emiya, into their ranks, despite his methods and reputation as a skilled mercenary and a hitman who employs whatever he can use to accomplish his goals. Though Kiritsugu had once wanted to become a hero who could save everyone, he has long since abandoned this ideal upon realizing that saving one person comes at the cost of another's life. For the sake of humanity, he will ruthlessly destroy anything and anyone who threatens the peace of others.
However, Kiritsugu finds himself deeply torn between the love he has found for his new family—his wife Irisviel and their daughter Illya—and what he must do to obtain the Holy Grail. Meanwhile, Kiritsugu's greatest opponent appears in the form of Kirei Kotomine, a priest who cannot find any sense of fulfillment in his life and sets his sights on Kiritsugu as the possible answer to the emptiness he feels.
Read more at
http://myanimelist.net/anime/10087/F...J7UXgZIKBUY.99
Toaru Majutsu no Index<<<
contains 2 seasons
Synopsis
Set in a city of scientifically advanced superhuman students, but in a world where magic is also real. Touma Kamijou’s right hand, the Imagine Breaker, will negate all magic, psychic, or divine powers, but not his own bad luck.
One day he finds a young girl hanging on his balcony railing. She turns out to be a nun from the Church of England, and her mind has been implanted with the Index-Librorum-Prohibitorum - all the magical texts the Church has removed from circulation.
Read more at
http://myanimelist.net/anime/4654/To...h2TPBPXkPwz.99
Elfen Lied
Synopsis
The Diclonius, a mutated homosapien that is said to be selected by God and will eventually become the destruction of mankind, possess two horns on their heads and have a "sixth sense" which gives them telekinetic abilities. Due to this dangerous power, they have been captured and isolated in laboratories by the government. Lucy, a young and psychotic Diclonius, manages to break free of her confines and brutally murders most of the guards in the laboratory where she is being held, only to be shot in the head as she makes her escape. She survives, falling off a cliff into the ocean and manages to drift along to a beach where two teenagers, Kouta and Yuka, discover her. Having lost her memories, she was named after the only thing that she can now say, "Nyuu," and the two allow her to stay at Kouta's home. However, it appears that the psychotic side of Lucy is not dead just yet...
Read more at
http://myanimelist.net/anime/226/Elf...ZoRck3yPec6.99
Mondaiji-tachi ga Isekai Kara Kuru Sō Desu yo
Synopsis
Izayoi Sakamaki, Asuka Kudou, and You Kasugabe have tremendous psychic powers and are bored with the regular world. An envelope arrives for each person, and when each opens their envelope, they are stunned to see the scenery around them change to a world they had never encountered before. They've been summoned by the Black Rabbit to help the community "No Name" to overthrow the Devil King.
Read more at
http://myanimelist.net/anime/15315/M...o50miTKYOtq.99
Soul Eater
Synopsis
Set in the Shinigami technical school for weapon meisters, the series revolves around 3 groups of each a weapon meister and a human weapon.
Trying to make the latter a "Death Scythe" which is the highest title for a weapon and thus fit for use by the Shinigami, they must collect the souls of 99 evil humans and 1 witch.
Maka & Soul Eater, Black Star & Tsubaki, and Death the Kid with Patty and Liz Thompson are the characters Soul Eater revolves around.
Besides taking the time to gather souls, these students of Shibusen defend Death City from some of the most powerful of creatures while still attending school and trying to become stronger.
Read more at
http://myanimelist.net/anime/3588/So...2VHXqWtjfFq.99
*******************and for the ecchi lovers (perverts) *************************************
Dakara Boku wa, H ga Dekinai.
Synopsis
NEVER make a deal with a wet goddess you've only just met. That's a lesson Ryosuke Kaga learns the hard way when he foolishly agrees to let Lisara Restole use some of his "essence" to stay in this world. Because despite her smoking hot appearance, Lisara's actually a Shinigami, a Goddess of Death. However, she DOESN'T steal years off his life like any decent Shinigami would do. Oh no, instead she sucks him dry of something much more perverse by leeching off his lecherous spirit and draining his ability to enjoy... er... the things that teenage boys normally spend most of their time thinking about! And now that he's been de-debased and de-debauched by her un-dirty trick, the poor regenerated degenerate's only hope of getting his licentiousness renewed is to join the queen of mental-clean on her quest, since when she leaves our mortal plane he regains his normal immorality! But the termination of the probation of his reprobation isn't guaranteed, because Goddesses of Death can be really harsh mistresses and it's going to be anything but easy to go back to being sleazy!
Read more at
http://myanimelist.net/anime/12549/D...hDxG9oTSjHD.99
Take care 
and enjoy your sleepless nights
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