Based on the cover, Samuel seems like the male lead for Anna. Though, given this is the Saintess Anna timeline, I wonder how that'll go. I know she was popular enough with Prince Louis that the engagement with Rachel was annulled.
You know, that's why this series really deserves more attention. So much of what we see of Saintess Anna was from the perspective of Rachel who harassed her and regrets that. From Anna's perspective, we know that Anna actually really adored and respected Rachel, and Anna had very little interest in the Prince. Rachel thinks that Anna and Louis were going to get together, but we can see for ourselves now if that really was the case.