I'm No High Priestess!

Former high priestess Stella was banished from the front lines of the dungeon crusade by a new priestess, whose false accusations cost Stella not only her job, but also her engagement. One year later, Stella, who has become an adventurer, saves Reinhardt, a demihuman whose original form is that of a blue dragon. The two of them decide to pair up and begin to enjoy their days adventuring together. However, in another part of the land, the dungeon crusaders who had cast Stella out are facing trouble. Though they thought their conquest would soon be finished, for some reason, it's been over a year and the end is nowhere in sight... A former high priestess and a young man with a precious secret begin their journey here! (Source: MangaPlaza)