Abandoned by his parents and given a monumentally large debt as a Christmas present, 16-year old Ayasaki Hayate is at the lowest point of his life. Desperately trying alter his hapless fate, he decides to kidnap someone to hold for a ransom. Due to an ill choice of words, the girl he tries to kidnap misunderstands the action as a confession of love. His plan is totally crushed when he gives his real name out. Realizing his wrongdoing, Hayate proceeds to rescue the girl from the yakuza, who had instead kidnapped her. The girl, as a token of thanks, offers Hayate a job as her butler. Hayate, overwhelmed by her kindness, vows to protect her even at the cost of his life. 16-year-old Hayate is really down on his luck. His unemployed parents are good-for-nothings who waste the money they have on gambling. One day, his parents have racked up a huge gambling debt that they had to sell Hayate to the yakuza for the value of his organs. In a desperate attempt to avoid that fate, Hayate decides to become a “bad guy” and kidnap someone to be held for ransom, but his efforts to do so are mistaken as a confession of love by the girl he targets.

Plot Summary: Hino goes to a school that specialises in music and has two streams: the normal stream and the music stream, where the music students are regarded as the more elite. She was running late for her class one day when she saw a tiny fairy, who seemed really excited that she could see it. The next day, the entrants in the music competition, who are decided by the school, are announced. Hino’s name appears on the list – except she doesn’t play an instrument. The fairy gives her a magical violin that can be played by anyone. Reluctantly, she enters into the competition and is forced to deal with the prejudices of her peers.

Kazuki is plagued by visions of giant robots that no one else can see. Before Kazuki knows what is happening, he gets ensnared by a pretty face, and then a mad scientist's experiment tosses him into a strange parallel world, where his imagined dangers have become very real!

The story centers on Mizutani Masayuki, an ordinary high school boy. His classmate Shimizu Sayaka lives in his home as a zealously intrusive maid, leading to uncomfortably erotic situations.

Plot Summary: Keitaro Urashima is determined to be accepted into Tokyo University, the hardest Japanese University of all to get into, because of a promise he made to a girl when he was young… a girl whose name he can’t even remember. After failing to get into Tokyo U twice, he is kicked out by his parents and goes to live with his Grandmother at her hotel, but it seems it has been turned into an all girls boarding house. What’s more, much to his surprise and to the tenants disgust, Keitaro is made manager of the boarding house.

Eita enters high school aiming for the National University School of Medicine. Because of his parents’ divorce—and his goal—he shuns anything to do with romance or love. One day, Masuzu, the school beauty with the silver hair who has just returned to the country, enters his life in a most unexpected way. Chiwa, his childhood friend since elementary school, will not let this go without a fight.

Hitotose Chitose was always alone and untrusting of people but when 5 female teachers appear and started living together with him in his family’s house as his mothers, things started to change and pick up, together with Hazuki-nee and Minazuki (his 2 sisters) everyday is a lesson

Minato Sahashi is extremely intelligent, yet due to his inability to cope under pressure has failed the college entrance exam twice. As a result he has been branded an idiot and loser by many. One day after talking to his yet again disappointed mother he comes into contact with a girl named Musubi who was under attack. The girl runs but takes him with her and soon finds that Minato, while unknown to him, is an Ashikabi, one of the mysterious set of masters that have the genetic trait that can become partners with some of the 108 cute girls, buxom women, and bishounen called “Sekirei”. The reason for the partnership allows the Sekirei to use all their power to win in the competition held by the mysterious MBI corporation.

Komori Yui is a positive-thinking girl who nevertheless is troubled by seeing spirits and experiencing poltergeist phenomena. In her second year in high school, she transfers to a new school—a night school for entertainers and celebrities—due to her father’s work. There are rumours that vampires exist among the student body, and Yui ends up living with the six sadistic Sakamaki vampire brothers.