Break x Trigger

is a Japanese light novel series written by Miroku Kobayashi, with illustrations by Hitogome. The series began publication on September 10, 2015 by ASCII Media Works under their Dengeki Bunko publishing imprint.

Synopsis
The girl holds the memory of her dead sister who appeared in the broken world.

Today, people are frightened by the threat of monsters and are connected to another world. The boy Tokio picks up a girl who appears from the magic circle. She had the memory and personality of her younger sister, Kanami, who had died in the past "interference with another world". Despite Tokio's confusion, the national institution "MIM", which has acquired the power of magic, seeks "Kanami" as an important person, and the private organization "DOG" that opposes the monopoly of magic rights of "MIM" also starts to move. Who is "Kanami"?