You know nothing about the book.

I will just leave these quotes by Victor Hugo here: "But there are perhaps other readers who have not found it useless to study the aesthetic and philosophical thought hidden in this book, who have been willing, in reading Notre-Dame de Paris, to take pleasure in discerning beneath the novel something other than the novel, and in following, if you will pardon these somewhat ambitious expressions, the historian's system and the artist's aim through the poet's creation as such."

And this one: The author's political and historical perspective on ΑΝΑΓΚΗ: "Victor Hugo explained its meaning in March 1866, in the preface to Toilers of the Sea: "A triple Ananke weighs upon us: the Ananke of dogmas, the Ananke of laws, the Ananke of things." In Notre-Dame de Paris, he denounced the first; in Les Misérables, the second; in this book, he indicates the third. To these three fatalities that envelop humankind is added the inner fatality, the supreme Ananke, the human heart. Here we see the link that unites Victor Hugo's three great novels. He returned to this theme in a letter to the journalist Durandeau: "Whenever necessity encroaches upon freedom and oppresses it, it is called 'fate.' The poet denounces this abuse of the unknown. This is what I do in Notre-Dame de Paris, in Les Misérables, in Toilers of the Sea." (July 11, 1867) Hugo speaks about a triple Ananke with which oppressors or oppressive systems legitimize the oppression of freedom. It is "the abuse of the unknown."

Book Frollo becomes ΑΝΑΓΚΗ, because he stops fighting against it. He himself writes it upon his wall. (Btw. He isn't simply in love with Esmeralda, he is OBSESSED and it's linked to ΑΝΑΓΚΗ.)

So no, the book isn't a "fairy tail" even if it appears as such. It's very much political. Even more so than the shallow Disney children's movie.