Reborn Side Character: Yandere Little Brother, Come Here

She was reborn into her worst nightmare—as the vicious side character in a story destined to end in blood. Jian Yi knows the truth: in three days, the world will collapse into an apocalyptic hellscape. Her survival plan? Use her younger brother, who's already awakened terrifying supernatural powers. But she doesn't realize he's been watching her with obsessive, feverish devotion—a yandere who clawed his way back from death for her alone. When a ruthless heroine meets an unhinged protector, survival becomes a twisted game of manipulation and devotion.