"And what a cruel and terrible thing it is, to be a divine with such power and magic, and yet find yourself so small-minded and afraid that you decide to live out your endless days harming others."

I knew Ruthless Vows was going to be angsty, but it exceeded my expectations. As the sequel to Divine Rivals, it possesses the same enchanting romance and beautiful prose.
To avoid spoilers for the first book, I won't go into too much detail about the plot. However, I will say that the entire thing is peppered with angst (and I loved every second of it). It's much darker than the first one and there's a lot more danger. We also got to see a lot more of Girlboss Iris, which I really loved. I didn't cry, but I did tear up and I think the conclusion was quite satisfying. It also expands on the worldbuilding a lot and I found the myths very intriguing. Overall, I felt that I enjoyed the plot of this one far more than the plot of the last.
We also got introduced to some new characters, as well as saw a larger focus on the side characters. There were no characters I disliked except for the obvious antagonists. Of the side characters, my favorite was probably Tobias. He reminded me of Brandon from Timekeeper and I just thought he was neat. Once again, Iris and Roman's romance was lovely and there was so much angst and I loved it all so much. Iris really showed off her strength in this book and Roman raised the standards even higher. They're probably one of my favorite book couples.
If you enjoyed Divine Rivals, Ruthless Vows is a book you do not want to miss. The Letters of Enchantment series as a whole is wonderfully written and 100% worth the read for any "romantasy" fans looking for a less lusty series.
4.75/5