Ancient Japanese devils come alive in modern-day Los Angeles as part of a plot to avenge the atomic bombing of Hiroshima. This is Tengu by Graham Masterton, a 1983 horror-thriller novel.
Matthew Legare - Thriller Author
Website for Matthew Legare, writer of historical, thriller, and noir novels, including the Reiko Watanabe/Inspector Aizawa series set in 1930s Japan.