Male Lead, I’ll Respect Your Taste

I woke up as the stepsister of the top in a devastating BL novel—a yandere top obsessed with revenge. Unfortunately, I’ve arrived right when the young top male lead is being neglected and ab*sed.
If he manages to escape as planned, he’ll definitely come back to kill me. What should I do?
To survive, I started bringing him meals and tending to his wounds.
Then one day, he shyly says, “I think… I have someone I like.”
His cheeks turned pink like a peach. However, he couldn’t easily bring himself to say who it was. Well, of course! How could he admit his first love so easily?
“It’s okay! No matter who you like, your taste is what matters most!”
So do whatever your heart desires, boy! I’ll respect your taste no matter what!
“……Edwin?”
Years later, as I tried to leave, he caught me, tears streaming down his face. Then, with eyes flickering with a dark, obsessive intensity, he threatened me.
“If you want to leave me, you’ll have to kill me first, Alice.”
……How exactly am I supposed to kill the strongest man in the world?
The male lead, who has suddenly turned dark and possessive, refuses to let me go.