Ral & Grad Series by Tsuneo Takano

The people of Sphaein are under siege by an army of horrendous monsters knows as Shadows. With the castle walls collapsing and their doom within sight they are persuaded to let loose a boy who himself has a Shadow within him. Released from his black cell a teenager who has never laid eyes on the opposite sex, he meets his beloved teacher face to face and discovers there are differences between men and women, differences he deems worth fighting for!

He's out to save the world, one rack at a time!In the midst of a war, a child is born during a bloody battle at the cost of his mother's life. From this baby comes forth a huge and powerful dragon born of Shadow. Within minutes the dragon lays waste to the landscape, but a quick-thinking knight locks the baby in a cage of darkness, where he grows to be a young man, knowing only the kindness of his young female tutor. Until the day the Shadows attack and he is set free.. moreHe's out to save the world, one rack at a time!In the midst of a war, a child is born during a bloody battle at the cost of his mother's life. From this baby comes forth a huge and powerful dragon born of Shadow. Within minutes the dragon lays waste to the landscape, but a quick-thinking knight locks the baby in a cage of darkness, where he grows to be a young man, knowing only the kindness of his young female tutor. Until the day the Shadows attack and he is set free...Ral's journey has taken him and his friends to an enormous walled city. Inside, the inhabitants are jittery, as the womenfolk have been mysteriously disappearing. While the residents prepare weapons to prevent the Shadows from invading, Ral is stunned to see his tutor, Miss Mio, walking towards an unknown destination in a daze. When he tries to intervene, the city's soldiers attack! Have the Shadows already found a way into the city?! less

R to L (Japanese Style). Final Volume!FriendThe final battle for the fate of humanity rests with Ral and his Shadow Grad. But he must first get past the immortal Red Phoenix, a Shadow with no known weakness, and the fearless Black Rhinoceros before he can take on the Queen of Darkness. With her Clear Human Shadow, Opsquria can kill with just one look! But will Ral have to make the ultimate sacrifice in order to defeat her?!