Working as an Undercover Agent in the Demon Cult, the Holy Lady Wants Me to Be Used as Cannon Fodder

I sneaked into the Demon Cult and worked as an undercover agent. I wanted to survive until the end of the mission, but I was captured by the Holy Girl of the Demon Cult and used as cannon fodder to explore the way. After narrowly avoiding death and blocking the knife for her, she protected me behind her with red eyes: "Whoever dares to touch my people must step over my body first!" I'm stupid: Don't you want me to die? Why is the saint so devoted to me? The righteous pursuit and the civil strife in the Demon Sect, I, a little undercover, was forced to bind my life and death to the saint, and I couldn't turn back at all!