Michael listened to everything that the Duke had to say, and Duke's last words stunned him even more. He didn't know how to react.
He didn't know that the Saintess already knew about his future as a saint when they first met, but did nothing to stop him when he ordered the massacre of three hundred faithless.
On top of the shocking reveal about the rosary, the past life of the Vampire duke gave him a complicated emotion, anger, disgust, pity, and… guilt. Everything was too much for Michael to handle. If the truth was this painful, he would rather have the Duke said that he was only pretending to help people in order to confuse Michael.
Because then, Michael would know what to do. He would leave the Duke forever and followed the Head Priest's teaching of becoming the new head priest. If the Duke lied to him, he would kill this growing feeling inside his heart.
