The atmosphere was getting a bit awkward.
Vivian blinked her eyes and looked at Gray, stammering, and after a long while, she finally said, "You... you're saying 'thank you' to me?"
"Yes," Gray replied softly.
"All right, I get it. You mean a Holy Knight won't repay a favor to a demon, right? I get it. I wasn't asking for a favor from you either."
"But I was only saying thank you, nothing else."
"You don't have to worry about me asking you to repay a favor. Let's be honest, the Demon Lord hopes your existence can divide the church, creating two church factions with different principles on this continent. So... I have to protect your holy faith and ensure your identity is not exposed. It's my mission, I would never ask you to repay a favor."
"But I was only saying thank you."
"Don't you get it?" Vivian shouted, "I'm telling you that you don't even need to say thank you to me!"
"But I still feel I should thank you," Gray looked at the agitated Vivian and said in a soft voice.