It is a pine knot of mizuhiki. Since it is drawn in black and white, "If you convert the degree to transparency, you can use it as a line drawing. 水引の松結びです。白黒で描いてあるので「程度を透明度に変換すれば線画としても使えます。
It is a pine knot of mizuhiki. Since it is drawn in black and white, "If you convert the degree to transparency, you can use it as a line drawing. 水引の松結びです。白黒で描いてあるので「程度を透明度に変換すれば線画としても使えます。