Aimée Carter's The Goddess Test series is right on up there with Percy Jackson for me, and maybe a bit higher now that I'm older. I love me some Greek mythology, but what I especially like about this series is how the main character has lived a normal life and isn't a god (though, spoiler alert, that might change during the books). The tagline is, "Become immortal or die trying," so that should give some away.
The characters, their story arcs, and the overall plot drew me in from the start, and I couldn't put the books down. While there are familiar Greek gods involved, she puts a fresh twist on them. So, whether you're looking for a fantastical love story, mythology, or a great (and quick) read, you'll want to check out this series I gave five stars to on Goodreads.
One day, I hope to publish a book half as good as the ones on this blog.