A supernatural system allows people to take revenge by having other people sent to Hell via the services of a mysterious entity and her assistants who implement this system. Revenge, injustice, hatred, and the nature of human emotions are common themes throughout the series.

Louise Françoise Le Blanc de La Vallière’s name is so long and her spell-casting skills are so poor that everyone at the Tristain Academy of Magic just calls her “Louise the Zero.” Louise’s humiliation only increases during an important second-year test, she inexplicably summons Saito Hiraga, a totally normal teenager from Tokyo. Now she’s stuck with him and Saito’s stuck with the lousy life of being a familiar.

Kasugano Haruka and his sister Sora have lost both their parents in an accident, and with them all their support. They decide to move out of the city to the rural town where they once spent summers with their late grandfather. At first everything seems familiar and peaceful, but changes come as Haruka starts to remember things from his youth.

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Kaoru is a college boy with everything going for him. He lives in a mansion with his beautiful fiancé, Aoi, all his roommates are babes, and they all have the hots for him. There’s just one hitch: due to family complications, Kaoru and his beloved have to keep their engagement a secret. As he gets tangled in countless steamy situations, can Kaoru overcome temptation and stay true to the lovely Aoi?

On May 1, 1945 in Berlin, as the Red Army raises the Soviet flag over the Reichskanzlei, a group of Nazi officers conduct a ritual. For them, the slaughter in the city is nothing but the perfect ritual sacrifice in order to bring back the Order of the 13 Lances, a group of supermen whose coming would bring the world's destruction. Years later, no one knows if this group of officers succeeded, or whether they lived or died. Few know of their existence, and even those who knew began to pass away as the decades passed. Now in December in the present day in Suwahara City, Ren Fujii spends his days at the hospital. Every night he sees the same dream: A guillotine. Murderers who hunt people, and the black clothed knights who pursue the murderers. He is desperate to return to his normal, everyday life, but even now he hears his friend Shirō's words: "Everyone who remains in this city eventually loses their minds."

Yuzu Hieda, is a high schooler and one of three sisters, all of whom are Miko at the local Shinto shrine. When her childhood love returns, it is discovered that dark gods have a great interest in him and Yuzu is recruited to gather fellow female students into a "Miko Council" to fight off a full-scale mystic assault.

The story begins when high school student Kazuki Muto is killed one night saving a mysterious girl from a monster, only to wake up in his school dorm, believing it to have been a dream; however, he soon finds out that dream wasn't a dream at all when a giant serpentine monster attacks him and his sister. Tokiko Tsumura, the girl he saved, explains that the monster is a homunculus. Kazuki had been attacked and killed by it when he was rescuing her; however, she, feeling responsible for him, revived him by placing a Kakugane medallion in his chest, serving as a replacement heart.

Ryuji Kisaragi is a normal high school boy living a peaceful life, which is turned into an adventure when his second cousin Eriko suddenly returns from overseas. He gets recruited into her organisation, the Seven Tails, in order to help her find artefacts called Lost Precious. Ryuuji and Eriko manage to seize a relic box from a black broker named Fang. Inside the box they find a girl whom Ryuuji names Rose because of the rose like pattern on her left hand. When it turns out that Rose is in fact a Red Dragon, Ryuuji decides to protect her from the black organisation using his powers as a level 10 Breaker.

Four years ago, Kazuma Kannagi was defeated by his cousin Ayano Kannagi for the right to be the successor of Enraiha, a sword passed down in the Kannagi family. His defeat, along with his lack of talent for En-Jutsu, the fire arts, the Kannagis' specialty, resulted in his banishment from the family. Now, Kazuma returns as Kazuma Yagami, a skilled master of Fū-Jutsu, the wind arts.

Love, Elections & Chocolate, is a Japanese adult visual novel developed by Sprite, and it was released in Japan on October 29, 2010 for Windows PCs. The gameplay in Love, Elections & Chocolate follows a branching plot line, which offers pre-determined scenarios with courses of interaction, and focuses on the appeal of the five female main characters by the player character. There have been two manga adaptations based on the game: one each serialized in ASCII Media Works' Dengeki G's Magazine and Dengeki Daioh. A 12-episode anime TV series adaptation produced by AIC Build and directed by Tōru Kitahata aired between July and September 2012. An additional episode was released on the series' final Blu-ray Disc and DVD volume in March 2013.

In Sakurashin, humans and demons live side by side in peace. But when a series of strange events threatens the delicate balance of their town, it will be up to four superpowered teens to restore order and save the day!

High school student Kazuki Shikimori comes from a line of powerful magicians with extraordinary DNA and he attends the most prestigious school for wizards in all of Japan. It would seem that life is good for Kazuki. Unfortunately, that couldn’t be further from the truth. He’s not the most smooth when it comes to the ladies, his grades are poor, his athletic skill is next to none, and to top it all off, he can only use his magic eight times before he turns into dust! However, three magical hotties have learned of his genetic secret and are all after him! Suddenly he has become the most “popular” kid in class. Are all these girls out to romance him, or are they only after his DNA?

Mamoru has a far-from-normal high school life with girlfriend Ayako, who possess magical powers.

Mukoujima Takurou is a lonely teenager who spends his time fishing at the pier and, to his incredible surprise, fishes up Muromi, a mermaid. Muromi first off doesn't realize she's a mermaid until she meets Takurou. Not only that, she is incredibly dense and crazy and has a drinking problem to top it off. Now every time Takurou goes fishing, Muromi appears and makes life interesting for him.

Karin Maaka leads an ordinary life in spite of the fact that she is from a family of vampires. Unlike the rest of her family, she has no problem with bright lights, sleeps in a bed instead of a coffin, and loves to eat garlic. She is such an abnormal vampire that she doesn't even suck blood - she makes it!

Hiroki Kamikura is a main character of this story that’s a student of Nadeshiko University and serves as an adviser for Art Department in Nadeshiko High School.

Ryuushi Shiratori is a young artist-in-training, about to start studying at a vocational school. Arriving at his new lodgings he finds himself the focus of attention for the collection of weirdos that inhabit the place. He also meets and falls for the landlady, Kozue Aoba, who seems to be both lovely and charming. However, Kozue is not what she seems to be... in fact, she's more.

Many people have fond memories of meeting a certain teenage boy in their younger years. However, their ages vary widely, and each remembers him as a teen. This story follows the intricate intertwining of their various stories and how this young man, who apparently lives outside of time, has affected each of them.

Randou Rino is a young girl with a head full of air and a talking puppet on her hand. She is accepted into the illustrious Gokujou all-girl's school, and is summarily, almost curiously, accepted as part of the even more illustrious Gokujou Student Council, who has more power and business ventures than most large businesses. Now a part of the student council, she befriends the talented members of the Gokujou Student Council, leaving one to wonder how a girl with seemingly no talents or redeeming qualities would get chosen for such a group.