Derrick realized he had moved close to the second doe, her scent breaking through his concentration. His nostrils brushed the velvety lips of her opening, slick and hot with need. Although he had serviced the first doe just minutes before, he felt swollen and heavy with seed. Derrick suspected that Diana had somehow enhanced him sexually so that he never ran out of semen. And there was a whole, huge forest of female that would eagerly accept his advances. The memory of mating was still fresh, and he found himself giving in to the desire. Was sex as a human anywhere as intense as what he felt as a stag? Certainly not just masturbating, and he had never done more than that. At least not until the first doe.
He was pressing against the second now, instincts combining with his own desire. The pleasure and sense of fulfillment was so strong! He grunted as he pushed up suddenly over the second doe, his swollen organ finding her opening and pressing in. All thought was lost in another orgasmic haze reinforced by the primal animal need to mate. For an intense minute, he was the stag entirely. There were no thoughts, no regrets, no cares at all. Only after he had released a powerful explosion of semen inside the female and slid off to pant next to her did Derrick resurface. He felt dazed and happy, the sense of having done something important hard to shake.
Derrick stayed with the three does as night fell, mounting each of the ones in heat once more. It wasn't until the sun began to rise the next morning that he came fully aware of himself. There were memories of grazing, moving through the trees, running from odd sounds, and of course, the intense mating. That was the life of a stag, he realized. The one day he had spent in this form was a preview of the animal's entire existence. Nothing accomplished except helping to make future deer. So why did he feel so... happy? No. Content? Not quite. Fulfilled. That was it. Derrick could not imagine feeling more fulfilled. After wasting his entire life in school learning useless facts and symbols, real accomplishment had been achieved in a single day with nothing more than base instincts.
There were more does nearby, at least one in heat. Derrick began moving towards the new scent, his thoughts focused on satisfying need. The previous concerns about his life, the threat of Diana, the strangeness of being an animal, all retreated into the back of a mind that was slowly simplifying.
A dark shadow watched the massive stag move towards his next conquest. Diana smiled, sensing another victory. The boy could have resisted, could have fought for his humanity. Even the threat of being hunted was not been enough to scare him off of letting the animal win. In a few days, the human identity and memories would fade completely away. The boy would exist only as a stag. Already it was almost too late - there was a still a chance of redemption, of restoration. But so many men and boys had followed this same path before, and almost all had ended their days as simple beasts.