Dragon's Winter is a High Fantasy by Elizabeth A. Lynn. The story revolves around twin brothers, Karadur and Tanjiro, son of the dragon lord of Ippa. Karadur is a dragon-child like his father, but Tanjiro is as human as their mother...and jealous of his elder brother. When Karadur grows to manhood, Tanjiro leaves their home to study magic. But the only power he desires is his brothers', and so Tanjiro betrays his brother, binding his power and preventing him from taking his dragon form.