This is a very well-written book. And the concept is very creative in its own rights.
I have a few concerns over this book. For example, the book reads like leftist propaganda. There are many recessive hints of support towards Maoist ideology and Maoist movements in general. There is a good chance that the author himself is an ardent believer in Maoist ideology and Communist ideology in general.
The way the book glorifies anti-national movements is a matter of concern. The way most leftists tend to extend any tribal rights movements towards armed anti-national movements, is prevalent throughout the book. It is of bigger concern.
The way the author takes on Hinduism is another interesting context of this book. Just like the author's ideological enemies are accused of trying to define Sanatana Dharma in a particular structure/shape of their liking, the author goes ahead and does exactly that. Through the mouths of his characters, he tries to define Hinduism in a narrow and self-structured perspective. Just like his adversaries are accused to do. He forgets that choosing the way one decides to practice Hinduism is a matter of ultimate personal freedom. He forgets that, just like the sect, allegedly, at the receiving end of his pen-spear. Just in a different narrative, which, in essence of opposing, is insignificant. In easy words- the author did just what he accuses his adversaries of doing- trying to define Hinduism as per one's liking sans any sense of respect for personal freedom assured and promised in Hinduism.
He portrays Bengali culture in a brilliant bright light. The songs, the poetry, the literature and their elegance is heard throughout the book. The book is entirely successful in that.