The metal was cold, and Kakashi shivered as the razor sharp edge of the kunai ran across one of his scars. The razor edge was sharp enough to bite deeply, but the little monster restrained its teeth, holding back the power hidden in its compact metal body.
"Do it." Kakashi whispered, "Do it, do it, do it. Bite me, make me bleed." He arched up, shuddering as the flat side pressed against his nipple. Teasing, teasing little creature.
"What are you doing? What the hell are you waiting for?" Kakashi's low moan stirred the heavy air of the room.
The monster crawled down, the tip dragging down his belly, not quite hard enough to break the skin.
"What-" Kakashi's words were suddenly cut off as the monster bit down, its teeth dragging deeply down the curve of his hip, the pain almost blinding and the cool metal slid over nerves, bone and sheared through muscle. His cry echoed in the small room, shattering the stagnant air. Adrenaline flooded his body, and his senses became painfully sharp, he could smell the sharp scent of oiled steel, smell the iron tang as his wound dripped blood, feel the warm, wet stickiness as it slid down the curve of his hip, turning short silver hairs a violent red.
The kunai fell with a clatter, and the little monster gone. Minato's eyes were wide and frightened, almost shocky.
"W-what the hell did I just do?" his hands lowered to Kakashi's hip, glowing with charka, obviously meaning to heal him.
Kakashi shoved the hands away from him, snarling, "You did what I told you to. And don't you take this away from me. Don't you fucking idare/i."
"Kakashi…this isn't right…You need to-"
Kakashi shook his head violently, already knowing the words about to leave Minato's mouth. "I'm fine." he insisted. The blood from his wound had dripped steadily down his leg, staining the sheet. "I'm fine."