You were the sun while he was the moon who were kept apart by fate, he had given you a necklace allowing you to communicate with each other through singing.

As year passed, which soon turned into decades, you finally hear his voice, his voice sounding sad and of longing as he sang to you, as he finished you sang back to him, Tsukuyomi shed tears as night fell once again, a fate of two gods who would never be able to be together.