THIS IS SLASH! In this particular story that means boys and boys kids! You don't like it? Go somewhere else. Remus goes through his monthly transformation as Severus is there for comfort.
My body cringed and shuddered as the transformation took over. As my vision faded so did the face of my lover. My senses became more sensitive, aware, and somehow primitive and enhanced at the same time. The gentle breathing of my loves became a thunderous roar. The bones of my body reconstructed, painfully popping and snapping. The accelerated pounding of my lover's heart was like a savage drum, urging my transformation forward with greater speed. Sweat rolled down my transforming body as the muscles and bones adjusted themselves beneath my skin. Sensations of crawling alive things soon began to overtake every inch of my skin. I looked down my arm and I could see the hair on my arm moving and growing on it's own accord. It was alive. My teeth grew long in my mouth, opening it slightly. My body grew taller, more muscular, tearing the remainder of my clothes off my body.
I stood tall for a moment, sniffing the air. The glow from the window called to me. I walked over to it, leaning down to sniff the ground where it was touching, then slowly following the trail of moonlight up with my nose.
As I gazed at the moon I had sudden urge. I lifted my head and sang out to the moon glorious and triumphant praises.
I turned to my lover wanting him to join me in my song of joy. When I gazed upon him, however, I realized that he is human. His name is Severus Snape. My name is Remus Lupin. And we are lovers.