Kishimu Eden no Grim Reaper

is a Japanese light novel series written by Arata Takano, with illustrations by Senmu. The series began publication on March 8, 2014 by ASCII Media Works under their Dengeki Bunko publishing imprint.

Synopsis
Funeral flower girl (Grim Reaper). It is the ultimate weapon that protects the world from the mysterious creature Legion. The human race, who was defeated by Legion, lived in a dome called Chrysalis, protected by burial flower girls.

Katsumi, a high school student, is attacked by Legion who has invaded the dome while rescuing the accident car. It was Iris, the leader of the Grim Reapers, who helped him. Recognizing Katsumi's sense of justice, Iris asks him for help. Katsumi is confused, but decides to put herself into battle to protect her childhood friend Haruno.

This is Sekai's last love story, blossomed by a boy and a girl with weapons.