The Sword of Amatsu

The Sword of Amatsu is the first novel in the Empire of the Sun and Moon series by Rob Hobart published in 2018. It is XX chapters long, and contains 228,000 words. The book begins a tale of epic fantasy set in a world of samurai; their wars, and their politics, and the threat of those who wish to destroy it.

Blurb
The young lord Ookami Akira, trained by monks to be a master of war but desperately ignorant of the Empire's civilization, must learn to be the ruler of the Gray Wolf Clan or he and his people will perish. Kuroi Kaede, a naïve girl forced into an unwilling marriage to Akira, must master the courts if she is to survive. The lowly magistrate Kobayashi Mitsui is the only one in the Empire who recognizes the true scale of the threat from the Cult of the Mask. And the murderous wandering swordsman Kenji may hold the fate of all in his blood-stained hands…