Ling Qianqiao traveled through time to Demon Slayer: Kimetsu no Yaiba
As soon as he opened his eyes, he was about to be sold by his cheap father. He finally broke away. Not long after he ran away, he was caught because of his physical weakness. At this time, he came towards the moonlight, and the moonlight coated him with a halo, like a god.
He rescued Ling Qianqiao and adopted her
And he is Ling Qianqiao's favorite and most distressed character in Demon Slayer: Kimetsu no Yaiba - Black Death Mou
Later, Ling Qianqiao also turned into a ghost, just to accompany him in the long river of time to come.
Purpose: Love and redemption