Kono Sekai de Watashi Dake ga Utatteru

is a Japanese light novel series written by Shinjiro Dobashi, with illustrations by Horiguchi Yukiko. The series began publication on December 10, 2016 by ASCII Media Works under their Dengeki Bunko publishing imprint.

Synopsis
Tokyo is the cleanest and most disciplined place in the world. While people live affluently in a controlled, crime-free city, the outside world, isolated from Tokyo, is about to be destroyed by them.

It's been a few years since "they" appeared in the world. Yusuke Usui, a new hunter, and Fukiyuki Shiomizaka, who are particular about girlish clothes, have been undertaking the task of protecting humans from "they" as members of the hunter team. As he travels through various troubled areas, such as the high-rise tower where infected residents stand and the city that relentlessly seeks specific blood, Usui and his friends are about the darkness of people and the truth hidden in this world. To know.