Y The Last Man volume 1-8 by Brian K. Vaughan & Pia Guerra
This is the saga of Yorick Brown—the only human survivor of a planet-wide plague that instantly kills every mammal possessing a Y chromosome. Accompanied by a mysterious government agent, a brilliant young geneticist and his pet monkey, Ampersand, Yorick travels the world in search of his lost love and the answer to why he's the last man on earth.
volume 1: Unmanned collects #1-5. 6th printing.
volume 2: Cycles collects #6-10. 4th printing.
volume 3: One Small Step collects #11-17. 3rd printing.
volume 4: Safeword collects #18-23. 2nd printing.
volume 5: Ring of Truth collects #24-31. 2nd printing.
volume 6: Girl on Girl collects #32-36. 2nd printing.
volume 7: Paper Dolls collects #37-42. 2nd printing.
volume 8: Kimono Dragons collects #43-48. 1st printing.