Introduced from China from the Nara period to the Heian period.
A typical plant that symbolizes longevity based on traditional Japanese play “Noh”.

kikkou=tortoiseshell, Tsunagi=connection.
Turtles have long been treated as a symbol of longevity.

The simplest and most commonly used version of the calm blue ocean pattern which represents peace, an eternity, and infinitely.

This comes from the Buddhism term which refers to gold, silver, lapis lazuli, lapis lazuli, coral, agate, pearls (the seven treasures).
The design is a circular shape made by joining four oval shapes with sharp edges at both ends, and some have flowers inside.