Shijuou no Hanayome

The Mirror Realm had always protected the mortal world from calamity, but what is the price of keeping this peace? Sayo Sagano has been raised his entire life knowing he was destined to cross over into the Mirror Realm to bear the Beastkings' child - a qilin, who will become their emperor. When he gets summoned into the Mirror Realm all of a sudden, is this finally his destiny unfolding before his eyes, or something far more sinister?