|“Nya, you make me so happy everyday. When we're not together, I miss you so much that it feels like part of me is missing. Will you be my Yang?”|
|— Jay, "Endings"|
The Yin-Yang Promise is a sacred tradition practiced by the people of Ninjago. A piece of a medallion with one half of the yin-yang symbol is presented to a romantic partner, signifying their promise to be one with each other forever.
- It is unknown if there is a ceremony that follows the initial promise.
- The Yin-Yang Promise is not the Ninjago equivalent of a marriage proposal. It is a separate thing, and a love-related custom unique to Ninjago.
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