Who's a Gargoyle?

Zafiro Havengaz has always been the odd one out in school, keeping to himself and having no friends untill he met Jessey Xexon a new girl in town who has a strange aura about her. Zafiro and Jessey become inseprible after a year of friendship, a week after their first year of friendship Jessey starts acting like a differnt person and that's when Zafiro starts getting cryptic letters from Rome