The Yandere Villain's Younger Brother in the Book Has Become Clingy

{The male protagonist is reborn, yandere, sweetheart, sister-brother love, revenge, redemption} Lin Ranran passed through the book and became the cannon fodder female supporting character who died the worst in the book. However, the system allowed her to accelerate the darkening of the vicious villain. Didn't this make her death worse and earlier? In order to return to the real world, Lin Ranran repeatedly jumps on the edge of the villain's darkening every day. Seeing that the blackening value reached 99%, it just stopped going up. Lin Ranran's face turned dark: "System, why is this?" It's going up, and I can go home soon. System: "This may be the reason why the first 100 master tasks failed." Lin Ranran was shocked, she was not going to become 101. Just when Lin Ranran's heart was filled with despair, the hands of the man behind him were wrapped around the girl's waist like a python, his voice was lazily drawn out, the corners of his lips were half-smiling with a morbid look, and the madness in his eyes was turning scarlet red. "Sister, do you want to abandon me?" The system thinks at this moment: It may know what the remaining one percent is.