In the snow kingdom, the "rebels" of the Snow King sacrificed themselves to the Snow Clan in order to be reborn as their enemies. This ritual was a long time in the making, and the snow King's remnant clansmen had a grudge against the Snow Kingdom's former enemies. The snow King had prepared for this sacrifice ritual for four years, during which time the snow Kingdom had been destroyed.
In the snow kingdom, the "rebels" of the Snow King sacrificed themselves to the Snow Clan in order to be reborn as their enemies. This ritual was a long time in the making, and the snow King's remnant clansmen had a grudge against the Snow Kingdom's former enemies. The snow King had prepared for this sacrifice ritual for four years, during which time the snow Kingdom had been destroyed.