A Salaried Saint Woman's Pastime

An older single woman reincarnates into another world, but instead of a gender transformation, she remains male. However, she becomes a saint, fights the Demon King, falls in love with a ninja, and encourages a literary girl—this covers up to the Demon King portion of the story. A rough outline of the work-within-a-work from "The Legendary Salaryman Saint's Free Time ~ The Lethal Technique of an Older Single Woman Farmer Echoes in the Forest's Shabby Apartment ~" It's the kind of story where the protagonist, who has a long lifespan, repeatedly engages in romantic situations here and there. However, since a more detailed version would be too long to post here, I've kept it rough. My apologies. I've posted the more detailed version on Moon (another platform).