Kagetsu no Umi ni Sasayaku Jumon

is a Japanese light novel series written by Ryo Amamiya. The series began publication on November 10, 2005 by ASCII Media Works under their Dengeki Bunko publishing imprint.

Synopsis
Shuichi is a sophomore in high school who lives on a quiet island called Yumekushima. Being aware that I was not familiar with school life, I wore "Noh mask" and spent time with my friends "normally". On the day of summer vacation, Shuichi meets a woman who is crying while looking at the sea at the harbor. There is a rumor on Yumekushima that "casting a" spell "at the sea will take you to your true location." She came to this island to confirm the story ... The encounter with her will change the daily life of Shuichi's "Noh mask". What is that "spell"? A series of short stories of heart vitamins woven by people with emotional wounds over rumors transmitted to the island.