Yamada Monogatari The War God’s Son (2015) Paperback Book

The Abe clan and its allies are in full rebellion.When the Emperor's greatest military leader, Yoshii, is targeted forassassination by magic, it is up to the newly sober Lord Yamada andhis exorcist associate Kenji to keep the young man alive long enoughto put down the uprising before the entire country is consumedby war. Yamada knows how to deal with demons, monsters, and angry ghosts,but the greatest threat of all is one final assassin, hidden in a placewhere no one - especially Lord Yamada - would ever think to look.