wow i feel so bad for the priest esp after reading the spoilers. like damn not everyone can be happy
spoiler
....
apparently priest and her was super in love in their past life, and she would use her power to help cure other people but she couldn't use her power to save the priest and it caused her a lot of distress (? i think this bit was confusing when i was reading translations), and there was a curse on her that she would kill someone so to save her priest helped turn back time and started giving her the medication so that she wouldnt be able to use her powers to save others bc he knew she would be forced back to the church to save people again which caused her to be ill and to 'stop' the curse. So he sent her back to the past to help her essentially, but they truly loved each other. And now hes in the present where he sees that shes now in love with the ML lol
Sorry if I explained this badly lol but yeah can u imagine going through all that to suddenly find out she wants to marry another man that you had no idea that they were seeing each other... yikes
also i think the perosn she was cursed to kill was abel but not sure about this bit
damn they need a sixth person to join? ヾ(☆▽☆)