Girl on Girl

After a mysterious plague kills every living being with a Y chromosome, escape artist Yorick Brown inexplicably becomes the last man on Earth.

From The Publisher:

After a mysterious plague kills every living being with a Y chromosome, escape artist Yorick Brown inexplicably became the last man on Earth. In the second volume of this riveting series, the far-reaching ramifications of the loss of half the world's population are further examined as Yorick, joined by an enigmatic government special agent and a cloning bioengineer, embarks on a cross-country trip to solve the mystery behind his survival. But when the violent Daughters of the Amazons trap the trio in a town inhabited solely by female prison inmates, mankind's last hope may be lost forever. SUGGESTED FOR MATURE READERS.