Call
A mouth that wants peace can call for it. If you don’t have a mouth, you can’t call for peace. So use your mouth and call for peace when you can. Peace is great.
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よ
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But before you call for peace, you must first placate the masses. To do so, you astound them with your yo-yo (よ) skills. Once they are so entranced by how talented you are with a yo-yo, you easily convince them to make peace.