Usotsuki Shangurira

On the day of a total solar eclipse, a girl who has lived her entire life in solitude sees something in a lake: the reflection of a blue moon. She leans closer—and falls. She wakes in Shangri-La, a town that exists beneath a full moon of that same impossible blue. The moon's phases seem to affect the minds of everyone in the town, and the townspeople believe she is the "Usotsuki"—a specific figure from their mythology who is meant to save them. She is immediately attacked by men who have lost their reason, and rescued by three young men called the Brothers of Calamity, who are despised by the town as harbingers of doom. A visual novel about a girl who arrived in the wrong myth at the right time.