alliance

Aizu clan was exist at inland of 200 km north of Edo.
And the Pacific Ocean side of 100 km northeast of Aizu.
There was Sendai clan.
　
Largest lord of Northeast area of Japan at that time.
It was Sendai clan.
200 years they had friendly relations.

"Aizu is the enemy of the Imperial court.
Sendai must subdue Aizu."
This instruction came suddenly to them from new government.

"Aizu had been guarding the Imperial court until quite recently.
The Emperor also had trust to Aizu.
We had been heard so.
But they became the enemy of the Imperial court suddenly.
We are hard to convince ourself about it.
Please reconsider for punishment to Aizu."
　
There was Yonezawa clan at 50 km north of Aizu.
200 years they also had friendly relations.
Yes，there was no problem between them.

Sendai consulted with Yonezawa.
Then they put out a petition like this to the new government.


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Sendai exist in the Pacific Ocean side.
When crossed abeam from Sendai to the Sea of Japan side，there was Shounai clan.
　
"Shonai is also enemy of the Imperial court.
You must also subdue Shonai."
This was its reply.

Before the battle of Toba Fushimi，Shonai had attacked to the Satsuma mansion of Edo by the provocation of Satsuma.
(This was in the wake of the outbreak of war.)


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"The destruction of the old forces
It is the best way for show the change of era.
But we did clemency to Yoshinobu.
　
Enemies who are left to us.
It are Aizu and Shounai.
We must absolutely destruction them."　
Such intention had been expressed in explicit.

”Break situation by petition.
That is impossible.”
They realized.
　
　
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There is Shiraishi basin in the middle of Aizu and Sendai.
(Sendai vassal territory.)

Incidentally，northeast area of Japan.
It called "Ōu".

Most lords in Ōu.
They held a meeting in Shiraishi.

"After now、this meeting will become our decision-making body.
Instruction of subdue aizu and shonai.
This is clearly unfair.
We request the withdrawal of this instruction."
They were notified like that to the new government.

This alliance called "Ōu Reppan Dōmei".