I think the Nine-Tailed King should be the protagonist's elder, maybe his mother, and she called him Xiaoyu in the conversation with Kanqi, and the protagonist gave the Nine-Tailed King laundry clothes, but she still wore them and couldn't bear to take them off. With the strength of the Nine-Tailed King, it is impossible not to know that the protagonist washes her clothes with his feet, and she can do this. I really doubt that she is the protagonist's mother. Besides, she knows the protagonist's fiancée and everything. She must be connected with the protagonist's master. Even if she is not his mother, she must be a close relative. But so is Jiang Yu, a brat who has always been distrustful and even hostile towards the Nine-Tailed King. He just doesn't know how to think about it, which makes people anxious to death!