忍之一字（Nin No Ichi Ji）
Nin no Ichiji means that patience is the only way.
Nin means to pierce your heart with an edge.
It means to always reflect upon yourself regardless of any matter and seek for the cause of the problem which lies not in front of you, but within yourself.
It is hard for people to look at their own wrongdoings. In reflecting upon yourself, you find you have many problems and it is hard to face those problems. Therefore, your own instinct is to protect yourself which blocks you from reflecting upon yourself.
The result is, your eyes only focus on the outside and look for the cause of your problems externally, not internally.
Nin no Ichiji… The definition of this idiom in the dictionary says: “Only one word, “Patience” which is the paramount and important word for success and promotion”
I hope to realize the meaning of the word “patience” and have the courage to point the edge at myself.