its my grandmother's treasure!
Since ancient time in Japan, it is considered that a demon detests shine object. Japanese sword was being enshrined on a household Shinto altar wishing rise of family fortunes because people believed that Japanese sword has a power to eject evil sign. Also, it was succeeded from parent to child, and also from generation to generation, wishing safe growth of child, and protection from misfortune, and also daughter in family took it as marriage trousseau. Nowaday, people buy it as a talisman treasure sword or use it as a gift to defend family safety and for long life health.