Ubaware Seijo to Noroware Kishidan no Seiiki Hikikomori Slow Life

Kohane is a summoned saint who had both her position and her fiancé snatched away from her by a younger saint who showed up out of the blue one day. Having fled to a sanctuary for refuge, Kohane gets rescued by the legendary Order of Knighthood, which had a curse placed on the members that turned them all into monsters! Kohane can't stand to see the sorrowful circumstances that Edwin, a knight who cares for her from the bottom of his heart, as well as the other knights of the Order are in... and she flips out. The younger saint is deeply troubling, but she doesn't care about that now. She's going to unleash all of her saintly magic that she had been restraining, and make it so she - and everyone else in the sanctuary - can enjoy a slow, peaceful life that's more comfortable and happy than anyone else's!
Source: KADOKAWA