Suho is a high school student normal... But he leads a difficult life, because his parents aren't interested in him. Furthermore, after a strange dream, he woke up with mysterious injuries on the neck and wrist. Elsewhere, the king of Southern Fantasy World is facing to a serious problem: lack of blood, the lack of which causes a drastic reduction of his fighting power. He must find humans and take their blood. Therefore, his servant and his dragon are looking for a human to satisfy their master. They end up meeting Suho, whose blood is particularly sweet. When the dragon asks him to follow them, Suho accepts to escape to his miserable life. But there's a problem: the king hates boys. The dragon suggests dressing up in girl to Suho, hoping the king doesn't notice.

Sooho precariously navigates the deadly politics surrounding his blood-drinking master Kiahn. Nations rise up and prepare to wage war over the most precious resource in the world...access to sunlight. Deadly enemies and even deadlier lovers appear out of Kiahn's foggy past. Victory in the upcoming battles depends upon his access to Sooho's blood. Everyone wants victory, but everyone also wants Sooho dead. The only question they ponder is when to strike.

─ 단 한권 분량으로도 키안을 밀어낸(!) 이사크의 순애보 이야기 키안에게서 받은 상처를 상냥한 이사크에게서 치유받던 수호는 그가 자신을 구하기 위해 치른 대가를 알고 마음이 무너진다. 마음아프고 후회하며 나름 애절한건 키안쪽도 마찬가지. 그러나 결국 표현은 집착으로. 경민과 류카의 달콤한 인간 생활 적응기도 추가.