En

She was forcibly taken from her snow-clad village as a token of war, but the pale nameless girl had no love of the frozen lands and its icy beauty. She had no memory, no identity and thus, no ability to grieve for the wreckage that the South had caused her people.

Despite this, meeting the cruel emperor of the Southern heathens had ignited something close to fury in her heart. She knew at once that for her forgotten past, bleak present and even bleaker future, there was only retribution.
Her purpose for living would be to slay him.
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Born with the blood of the Sun, he was destined to lead the army against their sworn enemies, the Frosts of the North. However, one fateful encounter with the North's Lord General had changed his biased beliefs and made him abandon the war. Filled with guilt and self-loathing for his misguided judgment, he vowed to personally pay the price for the peace both lands deserved.

He had to betray his emperor's wish of everlasting summer.