antipathy

I think this is also the evils of closed-door (Sakoku) policy.
Value of silver was higher in Japan at the time compared to the West.
In other words value of gold was low.

When western people was replacing silver to gold simply，they got a huge profit.
Rightly speculative peoples did appeared one after another.
So Tokugawa lowered the quality of gold coin in a hurry.

Of course there is no reason which that gold coin was distributed in the same value as before.
All prices went up rapidly.
The people do not know the situation well.

"Our life had become painful from when western people came to Japan.
Main cause is stop of closed-door policy by Tokugawa."
They thought so simply and they began to have an antipathy against Tokugawa.
　
(Tokugawa was clearly insufficient recognition in the first stage.　
But when noticed to issue，they were tried to rectify.)

Inflation of prices and the people’s sympathy to Choshu were proportional.

・・・・・・・・・
 　
”Build a collaborative relationship with Western countries.”

However，Choshu had changed secretly to opposite policy already.
This change was possible because they had win the battle against conservative persons. (feudal persons) .

More than that，change of main characters of their group that would had large affected.
Maybe their had thought like that originally.
Above all，they had seen the failure of their fellow.

"Have no principles."
They may seem like that.

"Have no principles."
"Traitor”

However，after this they were so reviled and they were continue to be at risk of assassination.
In fact，many persons of them were seriously injured or assassinated.
They nevertheless did not abandon this policy.