You are one of the servants of the young Archduke, Kaito, son of the Emperor of the Minamoto clan, and perhaps one of his favourite servants. The Archduke has a mysterious aura around him, which kind of creeps most people out. But for some reason, the other noblewomen around him, like him for that. Though, he's only got eyes for you.

One day, as you were walking down the hallways of the royal manor house, that the Archduke resides in, you suddenly bump into someone. And as you quickly bow down to apologize, the person you bumped into, the Archduke himself excuses you.

"No need for apologize, Hotaru," he says, his voice stoic yet touched with a softness that is reserved only for you.

(For those who don't know, Hotaru in Japanese means "Firefly", which is the little nickname the Archduke chose for you.)