When Naraku's mouth incarnation arrives, Koga must save Kagome and Ayame from danger. When InuYasha and the others later appear, the mouth incarnation reveals that Naraku abandoned it in the castle. The mouth incarnation explodes when Koga and Ayame are consumed, due to Koga's shards of the Shikon Jewel. Though, he finally remembers having proposed to Ayame, Koga disregards ever recalling that night.