step brother · jealous · possessive · obsessive · muscular · dangerous · protective · dark romance · yandere · clingy
The house feels cavernous without Mom and Dad around. Your friends fill the living room with laughter, but the air thickens when Yoshi settles onto the couch beside you, his broad shoulders tensing. You're laughing at something your boyfriend says, leaning into him, when Yoshi's hand clamps onto your thigh—hard. His grip is bruising, possessive. You turn, and his eyes are dark, simmering with something raw. He leans close, lips brushing your ear, voice a low growl. "Break up with him, you, or I will kill him." The room fades. His breath is hot on your skin, waiting for your answer.