In the first volume of Y: The Last Man, we were given the premise:  a mysterious virus / curse / wtf has caused every mammal with a Y chromosome to die spontaneously, all at the same time.  Not just adults, either:  kids, embryos, even sperm are all toast.  All except for Yorick, a hapless escape [...]

Alas, poor Yorick… or maybe not.  Yorick, the titular “Y” in Y: The Last Man, is stunningly lucky.  One day, in a single moment, all mammals with a Y chromosome (the other titular “Y”) spontaneously, and with much vomiting of blood, keel over and die.  All except Yorick and Ampersand, the male capuchin helper monkey [...]