High School DxD

Issei Hyodo is your average perverted high school student whose one wish in life is to have his own harem, but he's got to be one of the unluckiest guys around. He goes on his first date with a girl only to get brutally attacked and killed when it turns out the girl is really a vicious fallen angel. To top it all off, he's later reincarnated as a devil by his gorgeous senpai who tells him that she is also a devil and now his master! One thing's for sure, his peaceful days are over. In a battle between devils and angels, who will win? (Source: FUNimation)

Rosario + Vampire

By a bizzare coincidence, Tsukune Aono has accidentally gotten himself admitted to a youkai academy, a school attended by monsters. Just when he thinks he'll run away from there, he meets the beautiful girl Moka and his mood turns ultra happy. However, she transforms into her true form when the rosary on her chest is taken off, she's a super vampire!

My Bride is a Mermaid

Michishio Nagasumi's life couldn't be any more normal. In an odd twist of events, during his summer vacation he ends up almost drowning in the sea. Luckily, the cute mermaid Seto San appears to save him. However, San is from a yakuza mermaid family and according to their law, if a human is to catch sight of a mermaid, either he or the mermaid must die. The only other way is for Nagasumi to be taken in as a family member, marrying San. In attempts to save both of their lives, Nagasumi asks for San's hand in marriage. Nagasumi's summer vacation reaped more then what he would expect, as he must now protect San from others finding her secret out.

Pandora in the Crimson Shell Ghost Urn

In an age when large-scale natural disasters frequently happen all over the world, when cyborgs and autonomous robots are beginning to appear on the market in technologically advanced nations, and major world powers compete for technology and resources, the divide between rich and poor grows and the future for the poor looks bleak. In this transitional stage, everyone wanders around in a self-indulgent daze and the way out isn't clear... This is the story of how two cybernetically enhanced girls meet.

Hentai Prince & the Stony Cat

Youto Yokodera is always thinking about his carnal desires, but no one acknowledges him as a pervert. He learns about a cat statue that supposedly grants wishes. The boy goes to pray that he will be able to express his lustful thoughts whenever and wherever he wants. At the statue, Youto encounters Tsukiko Tsutsukakushi, a girl from his high school with her own wish—that she would not display her real intentions so readily. (Source: Anime News Network)

Symphogear

With the coming of spring, Hibiki Tachibana and Miku Kohinata start their first year in high school school at the prestigious Lydian Music Academy. That their idol, the singer Tsubasa Kazanari, also attends Lydian is just an added bonus. Neither of them know that their lives are about to change forever. Neither of them know that the first, awakening beat is almost upon them. (Source: Rightstuf)

SHUFFLE!

In present times, Gods and Demons coexist together with Humans after the door between each of these worlds had opened. Tsuchimi Rin is a normal young high school student attending Verbena Academy, spending his days living peacefully with his childhood friend Kaede. Unexpectedly, one day the King of Gods, the King of Demons and their families move into be Rin's next door neighbors. Apparently the daughter of the Gods, Sia, and the daughter of the demons, Nerine, are both deeply in love with Rin after having met him the past. Along with his playful friendship with upperclassmen Asa and his encounter with the silent but cute Primula, Rin has much on his hands dealing with the affections of each of these girls. Based on the eroge by Navel.

DearS

Ikuhara Takeya is a high school student living a normal life. He is not interested in the commotion around a UFO filled with beautiful alien females that crashed on earth a year ago. The aliens, known as DearS, are deciding to take permanent residence on earth. What no one knows is that these aliens are a slave species whose sole purpose is to serve and please their masters. One day, Takeya spots a person shivering behind some bushes. This person, Ren, is one of the DearS, and after being saved by Takeya she chooses him as her master. Takeya, who doesn't know about the master-slave relationship of DearS, tries to teach Ren the normal lifestyle of the people on earth, though he constantly fears that Ren is an evil alien who's trying to brainwash him. Ren, however, isn't like other DearS. She is in fact malfunctioning and is being tracked down by their leader. Meanwhile, Takeya begins to learn more about DearS, and a mythical DearS relationship called “Gift” begins to develop between them. (Source: Anime News Network)