I Picked Up the Best Villain in the Story

I thought I was reading a hunter-themed BL novel, but I found myself possessed by it. The life within the novel was just like reality, except for the various fantasy elements added in. That was until I accidentally saved a child perched on the edge of a cliff. “My name is Lee Ji-an. Can I ask what your name is?” “I’m Se-hun.” “Se-hun?” The name Han Se-hun belonged to the protagonist in the original story. A guy who was obsessed with blood, slaughter, battle, and numbers. Still, it couldn’t be that I picked up the future villain, right…? But what kind of younger brother strips his older brother and ties him to a bed? Isn’t that something you should do to the protagonist? So why is h...