Piggy's Misfortune

Colette Chartreux and Piper Paddon.
Two girls, head over heels for each other.
But when a second outbreak of an infection, that turns people into mindless killers with no control over their actions, attacks their city once more, they're driven apart. Colette forms a group, The Golden Fist, and Piper joins a group, The Blood Paw.
The first few months of the infection run smoothly, they've been there, done that. But never without each other. And when Maple Meeve shows up, taking control of The Blood Paw, things start to get... messy.