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 proposing to Nya in "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.


March of the Oni

The Darkness Comes

Jay practices his Yin-Yang to Kai, but he says that he is doing it wrong. When Dareth comes in, Kai tells him, much to Jay's disliking.

Into the Breach

Cole finds out about the Yin-Yang and gives Jay advice. But he compares Nya to an old bandage. Later, Jay tries to start the Yin-Yang but is spooked by Garmadon.


Jay proposes his Yin-Yang to Nya.

Master of the Mountain

Queen of the Munce

Jay mentions it when he introduces Nya to Queen Murtessa.


  • It is unknown if there is a ceremony that follows the initial promise.[1]
  • The Yin-Yang Promise is not the Ninjago equivalent of a marriage proposal.[2][3] It is a separate thing, and a love-related custom unique to Ninjago.





War of the Oni and the Dragons · Light vs. Darkness · Reign of Aspheera · Takeover of the Never-Realm · Serpentine War · Battle for All of Time · Attack of the Great Devourer · The Final Battle · Nindroid Conflict · Second Serpentine War · Battle of Stiix · Fall of Ninjago · Rise of Ninjago · Oni Invasion · Monastery Siege · Lloyd's Journey · Liberation of the Never-Realm · Attack from Prime Empire · Battle for Shintaro Mountain


Ninjaball Run · Tournament of Elements · Thunderblade · Street Race of Snake Jaguar · Speedway Five-Billion


Slither Pit · Day of the Departed· Yin-Yang Promise · The Choosing


Alternate Timeline · Yin-Yang Eclipse

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