Catania Hearthfire was living her life, hidden from the outside world - and hidden from the Company, until she was involved in a fight between vampires and Kowloon children, only to escape seriously injured. Taken to the Special Zone - much to Zelman Clock's dismay - Sei leaves her in Rinsuke's care. But yet, he didn't know that she would be the one prophesied to help them.

Kayley Sayer, a 16-year-old girl, who was raised by her beloved uncle, gained the heart to take a step into the future, leaving all the pain and the wounds of her past behind her. Accepting the request to be Teikou's assistant coach she experienced life with everything that this involves: happiness, friends, but also pain and despair. And in the end: For whom will she decide?