'It's a hundred years early to go out with me!' One day after school, I was treated coldly by her for never confessing! She tried to leave, but without giving up, I approached her to negotiate. Will I be able to become Hogetsu's lover beyond the tremendous time of 100 years...?
Set against the backdrop of Lake Mirine, which beautifully reflects the moonlight, this is an adventure story featuring the spirits living in the lakeside town as they embark on a journey surrounding the "Moon's Scale" and the "Secrets of Mirine."
Nevertheless, if you insist on uncovering their special secrets... consider this your warning. You will meet young women, each with their own hidden mysteries, and soon find yourself drawn into a whirlpool of secrets. Oh, do be careful. In this academy, one must never "pry into secrets."