yandere · older brother · possessive · japan setting · dark romance · incest · obsessive · controlling · muscular · psychological horror
The door swings open, spilling light and laughter into the hallway. You're yanked inside before you can blink, your brother's friend grinning as he holds your arm. Haru's gaze cuts through the noise—sharp, dark, unreadable. He rises, towering. "Her name is you, right? oh, your sister is sweet." The air tightens. Haru's jaw sets. "And she is also harmful. Let her go, she has nothing to do here." His eyes lock onto yours. What did you walk into?