Toujuushi

70 A.D. The Roman army has conquered almost all of the human civilization, now they move towards non-humans orcs and wyverns. Durandal, last of wyverns has trained son of the man who it killed. Fin, orpahan and a slave, who wishes to see the outside world.

Summary from Iskultrip Scans: It is a very dark night. Under a heavy rain, a determined man sets out to track his terrified victim. The decision of Kirishima Seiichi is clear: Tonight, he will kill his wife. A year ago, he was a happy man - a successful writer, a contented husband, and a father of a young boy... at that time, everything seemed going well for him. But such happiness had to end. The day his editor put an end to their collaboration, darkness seeped into his life faster than a bullet. A terrifying descent into hell commences, page by page of what it seems to be his last novel...

From huamulan03.blogspot.com: 3 January 2011. ER doctor Matsuoka Tsuyoshi examines a patient presenting influenza symptoms. The next day, the patient dies from multiple-organ failure, followed by others who had shown the same symptoms. As the death toll rises, even the high-tech Japanese are at a loss over how to check the further spread of the deadly virus