Thread Weaver

Fenton Mardwich, amateur artist, steps through a wormhole and lands on Kaseto, a medieval world that's been conquered by a vicious, brutal race. He's immediately put into service not as a soldier, but as a scribe, a war correspondent, someone who will record the action done by the Dranians, his new captors, and their leader, King Hallefwatt.  Aiding Fenton are Litro, Sekisa, and Angyalla, a winged woman with a mission of her own.
Through fight and flight training, mock battles and real ones, the four bond and plan their escape. Once they do, though, it becomes a battle of survival. Fenton's life has to count for something. And if it means fighting the enemy and perhaps dying, then that will be his mission-and his destiny.