15 years ago the world discovered magic as well as mythical beings (basically beings from various legends) in another dimension. Humankind learned to summon these dangerous mythical beings and use their power to great effect. Seven countries formed contracts with these "gods" and gained their allegiance as a result. Gods will chose their summoners on their 14th birthday and give them a stigma. Schools have been set up to train summoners and magical swordsman (basically bodyguards that give the summoners time to cast their spell) as a result.
Romance
The story begins with Izumi Hayato running to be student body president. But when a beautiful girl swings in promising the liberalization of love while flinging condoms into the audience, he ends up losing to her and becoming the vice president. At the student council meeting, the newly-elected president invites herself over to Izumi's house, where she promptly announces she is to become Izumi's wife thanks to an agreement – facilitated by alcohol – made between their parents when they were only 3.
Takeru Ohyama, a young normal yet perverted minded guy, got accepted and now goes to a school that, unknown to him, was where combat and magic is used. On the first day, he meets again after three years: Haruko Amaya, his childhood friend, Inaho Kushiya, a girl who says she is his fiance, and Kodama Himegami, a blonde who wants to kill him. Finding out that there are many girls there that just do not like him, he is told that everyone there uses a special magic ability while using an item or weapon called a Maken.
Minamoto-kun has a face pretty enough to make people think he's a girl. Because of his face, he was bullied by the girls in middle school who were jealous of his face. He developed a fear of women due to the trauma and he ended up attending a high school for boys. Just as he enters college and makes a promise to himself to overcome the trauma of his past, his father remarries and asks him to move out of the house. His father arranges him to live with his aunt (Minamoto-kun's father's younger sister) for the time being.
Hanamichi Sakuragi is a delinquent who has never had any luck with girls. However, when he meets Haruko Akagi, he is sure that she is the one for him. Haruko is a big basketball fan and notices his potential as a basketball player (due to his immense height). Hoping to win her heart, Hanamichi earnestly tries out for the basketball team. Does this complete newbie have what it takes to even join the team?
The pure of heart Ah Dai was born into a live of thievery. One day, he was taken away by Gliss, a powerful alchemist to make a god instrument. His new fate leads him to save the life of the country's top assassin “King of Hell”. To repay him, Ah Dai is taken away by the assassin to receive intensive training. What will become of Ah Dai?
A girl with a god's name, Kubera. The god who's prophesied to bring great change into the world.
The story begins with Kubera in a remote mountain village with her family, But her life turns upside down as she witnesses the fiery end to her town and everyone she knows. Accompanied by a magician of riddles, watch as world trembles at the war against the gods.
Sequel to Immortal Regis. Reading the entirety of the prequel is highly recommended, otherwise, this story from chapter 4 on will spoil it and be confusing.
Staz is the vampire boss of a section of the demon world, but he has little interest in human blood. He is more infatuated with Japanese culture. When he learns that Yanagi Fuyumi, a Japanese teenage girl, accidentally wanders into the demon city, he jumps to the occasion. However, while Staz deals with an intruder on his turf, the oblivious Fuyumi is killed by a monster and becomes a wondering ghost. The disappointed Staz vows to her that he will find a way to bring Fuyumi back to life.