Since he had made the trip to this remote planet as a stowaway, Darkthorn had been made aware of the terms under which he was allowed to actually remain there. It really had been an amazing piece of good luck on his part, though maybe he was due a break after so many years of being forced to take what he could grab and then move on before he was hunted down by vengeful relatives.

Either way, he had started to thoroughly enjoy a situation in which he could both remain near so many nubile females and also not have to worry too much about the repercussions of his activities. It had started to have an unexpected effect on him though. His long hunt for that one girl and his attempts to find Pan now no longer obessed him to quite the same degree. Whilst still aware of his quest, he had started to wonder if maybe it would be what he really wanted should he succeed.

After all, if he found Pan there were no guarantees and if he found the girl, he would lose a part of himself; a big part really since as things stood he could stay in a place like this for years and gratify his more carnal instincts on a fairly regular basis. The journey was starting to become more pleasant than the destination.

So it was that he found himself this day with twilight approaching, concealed amongst the trees which bordered the sports field and watching a number of girls in their activities as they practiced a variety of vigorous events dressed in clothing much more abbreviated than the normal school uniform.

Physical education was one of the courses that Kat could honestly say she enjoyed. Spending seven years having it drilled into one's mind, you either came to find some fun in it or were miserable all the time. She'd seen what the latter did to people, and it wasn't particularly pleasant. Today's class was simple enough, after a short game of footy they'd been broken up and told to run five laps before coming in for the end of class. Since she'd skipped her morning routine today and had no classes after this one she'd opted instead to simply stay and continue running.

Her classmates waved as they left the field, eventually leaving her alone running along the outer ring of the track. After nearly forty-five minutes of continuous running on top of what she'd already done in class, her body finally gave up the goat. Heaving for breath and drenched in sweat she opted to stretch out before going in for a very welcome shower. Picking a clump of trees just outside the tracks' ring, she began stretching in the shade. Starting logically with the largest muscle groups she began with toe touches.

In other circumstances it could have been seen as an invitation to party - a lithe young girl bending double and presenting her bottom towards him in a pair of skimpy shorts. Darkthorn wasn't that naive but neither was he immune to the sight of a shapely rear end displayed in taut fabric; fabric which hugged the hemispherical curves and sank between them where it dived between the student's parted legs.

If it wasn't an invitation to party, well he was thoroughly inclined to gatecrash one. Treading as softly as he could he worked his way nearer until almost within touching distance of the tempting bottom which was rhythmically jutted out on each complete cycle of the girl's exercise.

Up close it looked even more imperatively to be beckoning him towards action.

Katarina stopped stretching after a moment, taking the time to stand up and look around a bit. The nagging sense that had served her well on exercise more than once was piquing the back of her mind. Who was watching? The fact that she couldn't see or hear anyone or anything else around only made her more suspicious.

This time, keeping a better eye out she dropped to a squat position. Still nothing, though she knew better than to ignore her instinct. Best then to finish and move indoors. From her squatted position she stretched out her left leg to the side, fully extending it while keeping a subtle eye and ear out.

The exercises seemed designed to show off the student's body to best advantage. No doubt that was unintentional but her current position did little but to highlight the way her sleek left thigh emphasised toned musculature just below the skin. The smooth interplay of lines as the girl made small shifts in balance was intensely feminine, nothing like the unattractive overdevelopment of a bodybuilder. Over the years Darkthorn had come to appreciate such subtleties in the female form and he was entranced by the sight of this pale limb glowing in the twilight with its sheen of perspiration.

Probably it was this fixation which made him careless of where he stepped. The branch he trod on didn't make a very loud sound but such noise as it did make was magnified by the relative silence of this deserted spot.