Nepo Zombie: My Relatives Run Every Dungeon

A ten-year-old boy falls into a zombie world and discovers his secret weapon: nepotism. The S-class Head Nurse is his aunt. The Red-Clad Woman, the Bronze Coffin Bride, and the Nether King are all family. With his undead relatives backing him up, dungeons are just family gatherings. He ends up king of two worlds. Who needs fighting when you have family?