Tsuki no Tate

is a Japanese light novel series written by Hiroki Iwata, with illustrations by Maki Muroi. The series began publication on May 10, 2006 by ASCII Media Works under their Dengeki Bunko publishing imprint.

Synopsis
August 15th, when my sister Sayoko died in an accident, was an evening when the brown cicada was noisy and the sunset was scary red, as if the world was burning. And the anniversary of Sayoko's death five years later. In the same way, clouds flow through the red sky in the setting sun without hesitation. The surroundings are surrounded by the bark of the brown cicada. There was something I had foreseen. A petite and beautiful girl was sitting in a forest that was surprisingly dark and always rustling and disturbing, under the gentle glow of the rising moon. "-Who are you ...?" The voice quality of the girl was similar to Sayoko-. Sakuraka Kunizaki, a girl who always sleeps at sunset, is by no means a substitute for Sayoko.