Mi-ko-ko-n

The main character, a high school student, belongs to the "Miko" club, and enjoys his school life. One day, he picks up a stone statue of fox. Soon after he strokes its head, it turns into a girl. She is Misaki, a miko. She has lost all her memories except for her name, and she says she is going to disappear soon. Members of "Miko" club decides to do a ritual to save Misaki but....