Faithful Spy (Shogakukan Novel)

The detailed portrayal of spy operations felt very authentic. I'm curious whether the author drew from real intelligence practices or creative imagination.

I loved how the protagonist’s loyalties were so complex, but it also made me question who the 'good guys' really are. Am I the only one who found myself sympathizing with morally gray characters?

The shifting perspectives kept the suspense high, but I wonder if this was planned from the beginning or evolved during the writing process.