Haou no Tsuki - Akechi Mitsuhide Shougai

From JManga:

The Life of Akechi Mitsuhide — The trials and aspirations of a man who serves in the shadow of a great leader, Oda Nobunaga, like a moon that mirrors a blazing sun. But what happens when an incident at Hongan-ji leads to a change of heart in Mitsuhide? A long-running historical drama portrayed in fine detail.