"Past is obdurate. It doesn't want to change." 
 So were many pages of this book, they didn't wanna turn, except for the boundary of few chapters and the last one which had me in one sitting. 
 This was like one of those popular animes ruined with filler episodes and fan servicing, one that can't be stopped since much of your life has already been invested in. And this has been, by far the clumsiest time travel plot I have ever encountered. There wasn't even a single honest effort to make sense of the plot, except for the cliched collapsing reality argument. If given the chance to go back in time and unread a book, this would be it. 
 Wish, this wasn't branded for time travel and alternate history, but for the feels readers didn't sign up for.