The Citadel of Bingyeon (Ice Smoke)

The stranger Seoha, who plunged through a rift in space-time into a harsh snowy mountain range. As the Supreme Council’s cruel pursuit net tightens to the very edge of the fortress in this hair-trigger crisis, the prologue to a grand all-out war with Supreme Commander Chanyeon, who has cast aside all formality at once to become a solid, stubborn defensive wall and block the way ahead for only your sake.