Killed the Demon King, Reborn With Chick Eyes

Synopsis

Abel's amber eyes could command every element, and that was reason enough for his comrades to hand him an island and tell him to vanish. So he built a coffin, set it for two hundred years, and slept toward an age that might have room for him. He wakes in the body of a child, in a world where magic has rotted into convenience and amber eyes are a joke, the mark of a boy who can cast nothing at all. A demon woman who waited a century for him sends him to the kingdom's foremost magic academy, where a professor has already started asking who he really is.