
Originally Posted by
The_Emperor
The penalty starts out smaller but it can grow as high as -400 from what i hear.
Every turn played after realm divide the penalty increases in value, so while your allies may stick by you in the short term after it, long term they will go against you.
The realm divide penalty gets applied to all factions on the map when you reach the required clan fame with province expansion AND when you take Kytoto.
Vassals created after realm divide are said to not have the penalty, however they will get it when you take Kyoto if you have not already done so.
So the only way to get a lasting alliance against that level of penalty is (after taking Kyoto and being Shogun) creating a vassal out of taking their last capital province, effectively you create a new clan on the map without the penalty.
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