Intersexed at birth, Yuuji's parents opted to reassign his gender as "male". Now he's a timid and girlish medical research student in his late 20s. Having lived on his own during university, Yuuji learned to cook, sew and clean up after himself. When he's not being a domestic God(dess) he's usually got his nose in a book. Yuuji is ridiculously intelligent and loves reading books about mythology in his spare time. While an employee of Endou Chemical under Tadokoro, Yuuji is pressured into participating in experimental drug therapy which has some rather unexpected affects on his body. Not only does the drug cause his original intersex gender to be restored, it renders Yuuji able to bear offspring to both human and dinosauroid males. Understandably, he's not thrilled about his new parts or the new role he has to play in everyone's schemes for procreation and/or world domination. (source: http://www.aragami.org/primer.php)
Jirou is at university to study engineering. On traveling back to Tokyo from a holiday, he meets a young girl named Naoko, who is traveling with her maid. At this time, the Great Kanto Earthquake of 1923 hits, which stops the train and causes Naoko's maid to break her leg. Jirou delivers Naoko and her maid to Naoko's family, then walks away without giving his name. Several years later, Jirou is promoted to chief designer for a fighter plane competition sponsored by the Navy, which ends in a failure. Disappointed, Jirou visits a summer resort where he runs into Naoko again. Right after Jirou answers that the one he loves is Naoko, she tells him that like her mother, she is afflicted with tuberculosis and may die one day. She goes to a sanatorium to get better. They are engaged, but Naoko decides to leave after to marry Jirou. After their marriage, she is bedridden and waits for her husband to return each day. Days pass and she decides to leave. As the successful launch and flight of Jirou's plane ends, an abrupt and quick breeze goes by, a sign of Naoko's death. She is last seen fading away in a dream after he emerges from his nightmare of the war.
Natsume is a young woman who is an itinerant martial artist along with her younger sister, Kurumi. For years the two wandered Japan in search of their long-lost father, Soun Tendo. They briefly usurped Akane Tendo and Ranma Saotome’s claim to inherit the Tendo Dojo and carry on Anything Goes Martial Arts after challenging and defeating them, but conceded their claim following a rematch. Both sisters are the only characters to appear in the OVAs who did not originally appear in the manga. (Source: Ranma Wikia)
Kurumi is a young woman who is an itinerant martial artist along with her older sister, Natsume. For years the two wandered Japan in search of their long-lost father, Soun Tendo. They briefly usurped Akane Tendo and Ranma Saotome’s claim to inherit the Tendo Dojo and carry on Anything Goes Martial Arts after challenging and defeating them, but conceded their claim following a rematch. Both sisters are the only characters to appear in the OVAs who did not originally appear in the manga. (Source: Ranma Wikia)
Droy is a member of Fairy Tail Guild's team Shadow Gear, along with Levy and Jet. Droy controls Rapid-Growing Plants to battle. He wears something called "Live-Coal" containers holding seeds for his magic. (Source: Fairy Tail Wikia)
Novali (ノ�ーリ Nob�ri) is a Mage of the Quatro Cerberus guild, as well as a member of its team taking part in X791's Grand Magic Games. On the third day of the Grand Magic Games, he is chosen to represent Quatro Cerberus for the Day's event. It consists on defeating monsters of different levels to earn points and progress. However, the event is finished by Erza Scarlet alone, which amazes the entire audience. When the Magic Power Finder is announced, Nobarly later strikes the MPF after Millianna, gaining 124 score, and becomes disappointed. (Source: Fairy Tail Wikia)