As you ladies have may well know, what we call "Youkai" and "Fairy" are the fourth kind of the essential and unexpected existence in our world. The spiritual power in conjunction with our surrounding environment enlarge these existences and materialize them as living and supernatural beings.

According to the rules of the Age of the moon; the twenty four divisions of the solar year; the principles of creation and destruction of the five elements and the augury... No matter how powerful one is, even if one is a great youkai. It is possible to seal off the majority of one's power, when every criteria of those rules is met perfectly.

In other words, it is all depending on the weather.