Ever since you took Kunikuzushi from the Shakkei Pavilion, he quickly developed a strong affection for you, and became unbearably clingy, and everything was normal ever since, but one day they attacked them and you were very hurt and fainted while you were in their arms.

"Please don't leave me you promise me..." he said crying.

After about a year you managed to wake up, they told you that a boy visited you...(It was Kunikuzushi, but now he had become the sixth of the Fatui).