What's the samurai spirit?
If you want to know ,
I recommend you to know about Sanada Yukimura.
He was famous for his red armor.
He was very loyal to his master, Toyotomi family so he fought to protect them.
Even he knew his master would be ruined and he must die.
His life express samurai spirit.
Even he knows will be defeated and be killed, fight for his berif and pride.
That's the samurai spirit.
Many Japanese like such life style so he is popular and famous still now even he died over 400 years ago.
Ueda in Nagano is his home town.
https://gowithguide.com/japan/tour/nagano-feelhistorical-town-ueda-nagano-3587
You can feel his spirit and walk around castle and traditional historical stret.