Tengu no Daidokoro

A story about the descendant brothers of a tengu. On, a 14-year-old who lived in the United States, is suddenly informed that he is a descendant of a tengu. Tengu's family has a tradition of leaving the world for a year at the age of 14 and living a secluded life, so On comes to Japan where his brother Iizuna Motoi is.