1 Percent no Kyoushitsu

is a Japanese light novel series written by Ryoya Matsumura, with illustrations by Miho Takeoka. The series began publication on December 10, 2017 by ASCII Media Works under their Dengeki Bunko publishing imprint.

Synopsis
This love is made up of 99% "ruin".

"I fell in love with you-- " An extraordinary visit to Seiya Amegasaki, an ordinary high school boy. It was a confession of love from a beautiful girl in her class.

Her name is Asuka Hibino, a transcendental beautiful girl who stands out even in the school. However, she was rumored to be a "reaper" who made her unhappy with the people around her.

But that's a complete mistake. Because she was an idiosyncratic person who would love people who would be unhappy in the future, rather than making them unhappy.

Those who are liked by the god of death will be ruined after all. Hibino quietly told Amegasaki, who was desperate, that there was a way to avoid the tragedy.