Escorts Will Kill You: Onyx & Bianca.

Hexagram City is a place where the police don't venture and the school management makes its own laws, in short it's a place where the local high school offers a curriculum unlike any other. Hidden among the lockers and biology labs is the Escorts Club, run by the ambitious, if occasionally dim-witted, duo Onyx and Bianca. Specializing in the "fine art" of fake dating to appease suspicious parents and peers, the girls trade in the city's most precious commodity...
time. But in a city where the chemistry teacher might be a serial killer and the local mob lord is a teenager who smokes painted hot-dogs, "business as usual" is a death sentence. When a routine identification of a dead client spirals into a high-stakes conspiracy involving biological weaponry, a "ghost-chopper" pilot, and a homicidal TV fisherman, Onyx and Bianca find themselves in a race against time.
Armed with a stolen bungee cord, a 12-pack of soda, and their faithful (and very real) pet panther Sheba, the girls must survive a landscape of senseless violence and total moral disregard.