Ronin (das Buch der Vergeltung)

The blending of real history and fantasy made the world feel so vivid. I'm curious whether this was based on specific legends or entirely fictional creation.

I found myself sympathizing with the character's pain but also questioning the cost of revenge. How did others interpret his moral dilemma?

The setting added so much depth and cultural richness. I wonder if the author drew from personal history or extensive research.