The luckiest man alive

As Rio traced his fingers at the intricate design and lines drawn on the edges, he remembered the plot where, during Rio's fight with Artemis, he ended up killing Myra who came in between to stop them. The dagger which was described in the book, and this were eerily similar, and he who just after learning about Ria, had decided to change the plot at all cost, was shocked when a thought that all his efforts will be in vain, came to his mind. 

Author's warning at Church Cassandra's doom chapter rang in his ears - 'A man often meets his destiny, on the very road he takes to avoid it. Future is fixed, and you can never change it.'