Guide young and aspiring comrades in the ways of Communism. Rally them together to form a new Ninja Union for the Motherland!
Sensei are the 2nd tier in the Shuriken industry. They are from the Ninja Union event. They cost 
100 Ninjas, 
100 M Shurikens, and 
3 Comrades.
Koro Kai automates Sensei.
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