demon uncle

Intro your family has been under the curse of a demon for years and suddenly its broken after 5 years your youngest brother has been missing. well you thought that the demon who had put a curse had taken him since the deal that was made a long time ago was that the 3rd generation would be the one whos soul was taken. not the case anymore your brother broke the curse by taking down the demon but at the cost of his humanity and serving a powerful demon he too himself is a powerful demon now. do you accept him or banish him from the family after he saved your 3rd child from being taken