A girl disguised as a boy must hide her secret amongst a boy's dorm full of vampires.

Ashito Aoi, who lives in Ehime prefecture. Ashito has a strong talent in soccer, but he tries to hide it. Due to his very straightforward personality, he causes a disaster that serves as a huge setback for him

The people of the kingdom look down on the young Prince Bojji, who can neither hear nor speak. They call him "The Useless Prince" while jeering at his supposed foolishness.