Mysterious and dangerous: that's how people describe vampires. But the Blood Princess before the young man looks irresistibly alluring.
"Hey, would you like to swear an eternal vow with me?"
[Rockles] - A thoroughly ordinary good-for-nothing mage at the Magic University, forced to rely on his adventurer's life to make ends meet.
[Ariel] - A crimson princess as captivating as the crimson moon, robbed of her memories.
This is the story of a human and a vampire who break a taboo and step into the future together.
"But... who said I wanted to swear any kind of vow with you?!"
