Pine is a plant that has long been loved by Japanese people as a sacred symbol. The ability to maintain green leaves even in the cold winter has been associated with ``eternal youth and longevity,'' and the fact that both male and female flowers bloom on the same plant has been associated with the hope of ``prosperity of descendants.'' Since the Edo period, it has become an indispensable part of both entertainment and daily life, as it has been depicted on the wooden walls of Noh stages and used to make Kadomatsu to welcome the New Year's god. The powerful vitality and beauty of pine trees are loved by many people even today.