Haiki Miko no Watashi ga Seijo!? Demo Kishi-sama ni Dekiai sareteiru node, Kyoukai ni wa Modoremasen!

One day, Iris, a shrine maiden at a church who is a candidate for sainthood, learns that once the saint selection ceremony is over, she will be branded as a discarded shrine maiden and sold off as a concubine to an upstart baron.

Thinking that she won't be chosen as a saint anyway, Iris runs away from the church, and on the way, she spots a sickly young man in a carriage and inadvertently heals him with her shrine maiden powers. However, the young man she saved turns out to be a titled knight, and he finds out that she has run away from the church...!

(Source: PASH! Books, translated)