The Nerd Turned Out To Be The Tyrant

I possessed an R19 devastating novel where a tyrant went mad and killed all the characters in the story.
The problem is that I only looked at the scenes and didn’t know the contents properly!
In any case, there is only one person to avoid, and it’s no other than the emperor.
But as a commoner, will I even have the chance to meet him?
While living in a village on the far end of the continent which was very distant from the imperial palace, I only have one interest!
“I’m Lucette. You can call me Luce.”
“Me too… call me Rev.”
One day, a mysterious boy, Rev, suddenly appeared in the village.
“Really, what are you going to do without me?”
“Yeah, how can I live without you?”
I’m worried because he’s so kind and naïve, so I have to take care of him and protect him!
…… That’s what I thought.
“…The other places are fine, but you should not come to the second floor.”
“Please, you must not drink this.”
“It’s nothing.”
Why do you have so many secrets?
“Report immediately who she meets, what she does, and who she smiles at.”
My friend, who disappeared for a while, came back even more suspicious.
“I told you, Luce. I cannot live without you.”
Who are you?