A zombie outbreak occurs, and all that's needed is a sliver of hope. Here, you'll find mature and beautiful women, and youthful and charming girls. Kitahara Sosuke is reborn to save those he couldn't save in his previous life, and he reunites with Sawamura Sayuri, fulfilling their promise from their past lives, resulting in their child. ...(Synopsis difficult, no tragedy, references *Saekano*, *Oregairu*, *Rascal Does Not Dream of Bunny Girl Senpai*, and *Highschool of the Dead* (partially).)