Survival in the apocalypse, teammate Xia Shiyu at the start

Shen Zhao is unexpectedly thrust into a treacherous post-apocalyptic survival game, beginning with an immediate zombie siege. His starting teammate is Xia Shiyu, a beautiful girl with long, straight black hair who lacks even the most basic combat ability. Fortunately, Shen Zhao awakens the Survival Sign-In System, which grants daily rewards to aid his endurance. On his very first day, he signs in to obtain a demi-human bloodline and the ability to resurrect with full health upon death. As Kasumigaoka Utaha pleads for help outside his door, Shen Zhao smiles; surviving the apocalypse has become his personal paradise for enjoying the company of anime goddesses.