In the Imperial family, various books and so on had been inherited from ancient times, but through the economic decline in the Onin War or the Sengoku Period (Period of Warring States) (Japan), many of them were lost.
皇室には古代から様々な書籍などが伝えられてきたが、応仁の乱や戦国時代(日本)の経済的衰微によって多くを手放した。