Beyond the Glass Walls, there is a gigantic ice field, a place where mist is always present and waves of heat can be felt, yet the snow never melts. If you travel through the field, you may be lucky enough to spot Thirio, the Ghost Wolf of Winter. It is said that whoever spots him, should run after him and hopefully he will travel through your body, and leave you with good luck for the rest of your life.
Those who have experienced this say that the moment he travels through your body, you feel warm inside and you get some sort of epiphany or calling in life. Thirio is very large in size and his tail is twice his body length.