1557 Summer and I own all of Kyushu. I've slowed down the conquests to improve the homeland for now.

Having met Takeda clan, I have a question for you:

Those guys own almost most of Central Japan with 11 provinces and I have brought a daughter of the daimyo into the family through marriage, hence building a "Very Friendly" relationship.

The Takeda are currently in war with Ashikaga Shogunate and they are "high"ly likely to accept a Military Alliance.

Does making a military alliance with Takeda at this point automatically make me waging war against the Shogunate ?