To Hell with the Church!

"Your Grace, the saint has been on the front lines for a year now."

"Mm..." The man in a splendid red robe lounged on a high-backed seat encrusted with jewels. He lightly tapped the armrest with his fingertips. "After all this time, has she made up her mind?"

"It seems not. The saint surrendered to the demons with her knightly order and became a legion commander. She also declared that she'd personally lead troops into Cold Jade to twist your head off, then put the other bishops on trial one by one."

"???"

(Self-insert marriage. The cover was picked at random; the protagonist doesn't look like that.)