Animal X: Aragami no Ichizoku (Yaoi/Gender bender)
27 year-old Ayukawa Yuuji has never been much of a man. He's more comfortable sewing than fighting, he faints at the sight of blood, and his fiancee is tougher than he is. He's also a terrible pushover. So when his boss at the medical lab volunteers him for some experimental drug therapy, how can he possibly refuse? All's mediocre for Yuuji: master of the pathetic.
Mediocre, that is, until a juvenile mass murder suspect jumps out from under Yuuji's bed, declaring him his "mate." Before Yuuji has time to argue, the stranger transforms into a 16 foot-tall dinosaur and beheads his roommate...
Yuuji suddenly finds himself the sole target of a lost race that turns into dinosaurs, an extremely scary woman with a Goddess-Complex, the yakuza, a mad scientist and one 17 year-old boy who really, really, really wants to sleep with him.
Animal X: Daichi no Okite (sequal to Animal X: Aragami no Ichizoku)
Animal X: Genshi Sairai (I think this is the last part of the Animal X: Aragami no Ichizoku books)
Only the Ring Finger Knows (Yaoi)
At Wataru Fujii's high school, it's all the rage to wear paired rings with the girl you love. Wataru wears one though he is single, and one day inadvertently discovers that his ring pairs up with that of tall, handsome and smart Yuichi Kazuki, the senior classman idolized by the entire school. Though Kazuki has a reputation for being kind to all, when dealing with Wataru, he is strangely harsh. Their paired rings somehow draw them together and the two alternately clash and attract, as they must sort out their budding feelings for each other.
Loveless (Yaoi)
Ritsuka Aoyagi's psyche is in dire straits; his mother is insane, his brother Seimei has been killed, and over the past few years he's seemed to become a different person. When the enigmatic Soubi Agatsuma arrives, claiming to have information about Seimei's death, Ritsuka is determined to uncover the truth. Soon, however, he is caught up in a web of darkness and spell battles, all the while searching for the reason behind his own personality change. Wary and defensive, Ritsuka is unnerved by his relationship with Soubi, as well as the tentative friendships offered to him by his classmates. But the world of spell battles, fighter units and sacrifices is an ugly place; and Ritsuka, in the middle of it all, finds himself having to choose who to trust.
Gravitation (Yaoi)
As a member of a musical duo on the verge of making it into show business, Shindou Shuichi has a lot on his mind -- especially since he writes the songs for his Bad Luck band. His life gets no less hectic when he bumps into Yuki Eiri, a successful yet cynical author extraordinaire, who immediately insults Shuichi’s lyrics upon reading them. Seeking him out to demand an apology, Shuichi nevertheless sees other facets of Eiri’s personality. Can he accept the fact that he might be developing feelings for the novelist who discredited his work on their first meeting?
Black Cat
Train Heartnet and his partner Sven are sweepers (bounty hunters) who capture wanted criminals. Train once belonged to a secret organization (named Chronos) but later withdrew. Now he hunts down an enemy who wishes to destroy those who cannot use the power of Tao or who he sees fit to live.
Yu Yu Hakusho
Yusuke Urameshi is a street fighter with a tough guy approach to everything, but no one ever expected a sudden act of heroism on his part: dying, from trying to save a little boy from a speeding car. When he arrived in the afterlife, he is informed that no one was expecting him to die that way, and were not prepared for his arrival. Yusuke is eventually revived, and is assigned to work for the Spirit Realm as a Spirit Detective in the human world. No one knows what this idiot will do but most times it seems like he ends up winning just by a little luck (or a cheap shot).
666 Satan (aka: O-Parts Hunter)
The life of an ordinary young girl named Ruby Crescent changed dramatically when she hears her father died and she became a treasure hunter like her father (someone that hunts for O-Parts). O-Parts are these magical items that grant people different kinds of superhuman powers, but can only be used by special people called O.P.T. (O-Part Tactician) or by angels and devils. On her journey Ruby meets a young boy named Jio, who seeks to conquer the world. Due to his dark past Jio is mean to Ruby when they meet, but after a while ends up traveling with her as her body guard. When Ruby gets attacked by an O.P.T clamming to be Satan, Jio ends up rushing to her rescue and starts to battle that O.P.T. Only to be on the losing side of course until Jio releases his true power only to be revealed not only as an O.P.T but also as the real Satan. After this small incident with the fake Satan, Jio decides to continue traveling with Rose with hopes that they can find out more about the past, but that is just the beginning of the story.
Tokyo Crazy Paradise (Gender bender)
It's the year 2020 AD, and Tokyo II is a city infested with crime. Women can no longer go out in the streets alone without being victimized. Not wanting their daughter to suffer the same fate, Tsukasa Kozuki's cop parents raise her instead as a boy. When they are suddenly killed by one of the yakuza's in-fights, Tsukasa is left orphaned on the streets along with her three brothers. With no other options, she goes to the only person she can think of for help: pokerface Ryuji Shirogami, her classmate of 8 years and also the head leader of the powerful yakuza group, Kuryugumi. Ryuji, whose father was also a victim of the same yakuza fight, agrees to take her on as his personal bodyguard. As they set out to find their enemy, Ryuji slaps on an increasing amount of debt onto Tsukasa using all manners of ploys necessary to keep the reluctant Tsukasa by his side.
Kami to Sengoku Seitokai
'...if you actually decide to go for it... and do become president of the student council...'
'This school... is at the center of the entire universe.'
Those were the words of Vice President of the Student Council, Kagura Mami that were said to Katsuragi Musashi on the first day they met.
What's the secret of that school? What's the mystery behind it all? And what's the past that haunts Kagura and Katsuragi?
Chrono Crusade
In 1920s America, Sister Rosette Christopher is a young nun of the Magdala Order - a military branch of the church charged with exorcising demons. Together with her assistant and best friend Chrno, a demon who Rosette has a contract with, she is sent on various missions to fight the many different monsters that lurk in the shadows. However, Rosette's main motive is to find information regarding her brother Joshua, who was kidnapped by Chrno's former ally Aion for unknown reasons. Aion has an ambitious plan that threatens the future of the world, and it's up to Rosette and Chrno to figure out Aion's plans and rescue Joshua before time runs out...
Komatta Toki ni wa Hoshi ni Kike! (aka: Ask It To the Stars When You're In Trouble from Loving Other People!) (Yaoi)
Opposites attract each other; Takara is short, cute, and has an inferiority complex, while Kiyomine is tall, blunt, and has a sister complex. After the death of his grandmother, Takara moves into the dorms for his first year of high school so that he won't have to live alone. At the opening ceremony the boy sitting next to him, Kiyomine, makes fun of him and when they go to the dorms later they discover they are roommates. With such a terrible first impression, they fight constantly until Takara decides he will move out since Kiyomine hates him so much. Kiyomine explains that he doesn't hate Takara, he just thought that Takara hated him. They apologize and begin their friendly, peaceful dorm life. Or do they?
Psyren
One night Ageha Yoshina passes a public phone as it's ringing, but as he answers he finds that there's no one on the line and hangs up, retrieving a calling card bearing the name Psyren in the process. Thinking nothing more of it, he goes home. However, intrigued by the disappearance of his classmate Amamiya, who was also in possession of a Psyren card, Ageha begins to dig around. He soon learns of an urban legend about a secret organization that leads those sick of society to paradise, and the only way to contact them is with the calling card. Intent on saving Amamiya, Ageha uses the card on a public phone. Though, when it is discovered he has a Psyren card, Ageha is pursued; and as he tries to escape his cell phone begins to ring. Upon answering his phone, Ageha is transported to a strange new world where he must now learn how to survive if he has any hope of getting home or finding out the truth behind the mysterious Psyren.
Diabolo
Ten years ago, close friends Rai and Ren made a deal with evil: they wanted the strength to protect their friend Mio, but she disappeared and the two were blamed for her apparent ‘murder.' Their deal, like the deals of many others in the world, had a serious consequence: they became the Diabolo, and at the age of eighteen they'd lose their souls and become something inhuman. Now, Rai and Ren are seventeen and on a hunt to find Mio while they are still human. Along the way they try to help save others who broker the same deals out of jealousy and desperation, but their eighteenth birthdays steadily approach...
Witch Hunter Robin
STN is a secret organization charged with capturing witches of all ages who misuse their inate ability of the Craft. Its newest recruit is a young girl named Robin, who wields the same power that she is helping to control. While skillful at their ability to detain quickly, the number of witches keeps seeming to increase, and the misuse of power grows stronger, casting a shadow of doubt as t