Who was the monster Kwai met when she was a child during the operation of Monster Hotel?

I met ghosts and gods for the first time, that is, the big boss of Shenzhai. The last few times were all silver.

There will be spoilers below.

Shiro's son died in a plane crash because of a curse, and then Kwai's mother left with Kwai. Then Kwai's mother couldn't accept the fact that Kwai could see monsters and abandoned Kwai. Kwai was found by the big boss when she was starving to death and gave Kwai a meal. When talking to Kwai, I decided to save Kwai (that is, break the curse). As for things to lift the curse, it is hard to get. Although I finally got it, the big boss couldn't move for several days. In those days, Yinzi gave Kwai a meal as a child. Finally, the food to reverse the fate of sunflower is also sent by silver.

The curse is because Kwai's grandfather Shiro was attracted by the daughter of the King of Eternal Life when he asked his wife for medicine in the past. After the devil's daughter failed in courtship, she cursed the Shi Lang family at the cost of death. In addition, the immortal king cursed the Shilong family with his daughter's body. Because there are two curses in the novel, I don't know which curse caused the death of the Shilong family.

Actually, Grandpa didn't sell Kwai to the big boss to pay off his debts. The IOU was written by Shi Lang after he was drunk in Shenzhai and saw the big boss alone. After breaking the treasure of Shenzhai, Shi Lang has found the treasure of the same value and paid it off. After Shilong's son died of the curse, Shilong begged the big boss to marry his granddaughter and take good care of her. When the boss found Kwai after Kwai's mother left, Kwai was starving. Big boss was afraid that his ghost face would scare Kwai when he was a child, so he borrowed the white face of silver. When I was chatting with Kwai as a child, I finally decided to save Kwai and marry her.

What I said is a little beside the point. Hh, the animation has only reached the fifth volume. These are all in the novel. Recommend yourself to read novels.