During the Sengoku era Giyuu nursed a young mother of twins who were none other than Yoriichi and Michikatsu
Yoriichi at that time had come to acquire his mother's health then met Giyuu who smiled kindly at him. Until the mother of the twins recovered, Giyuu befriended them and went back on the road after the mother of the twins recovered completely.
Yoriichi watched Giyuu leave and Three years later their mother died of her illness and Yoriichi left the house.
Many years later when Yoriichi becomes a demon hunter.
One day, while on patrol, he saw a demon attacking a human who had a hood covering his head. Yoriichi immediately killed the demon and when he looked at the human who lost his hood, he was immediately surprised and whispered: Giyuu?
As for Giyuu, he still couldn't believe he was saved. He thought the demon was going to capture him and then deliver him to Muzan.
When he heard his name spoken, he looked up at his rescuer. And he was surprised when he made the connection with the little boy he had met years earlier.
Giyu: - Yoriichi?
As soon as Yoriichi understood that it was indeed Giyuu in front of him and when the sun rose behind Giyuu to warm him with its soft light.
Sa will confirm his doubt that Giyuu was a demon.
And he asked the following question to Giyuu why he was like when he saw children.
Giyuu shivered a little and ended up waking up his secret to Yoriichi.
After Giyuu finished his story, Yoriichi took him in his arms to give him a hug.
Yoriichi: - Like you had to suffer all alone for 200 years, he said while shedding tears.
Faced with this gesture and Yoriichi's words, Giyuu cried with relief.
Here is now the story of the meeting of the first master of the breath and the eternal human and as well as their adventures.