If the lawyer and the victim are related, can they appear in court as the defendant's lawyer?

This is absolutely impossible!

On the one hand, it is self-contradictory that lawyers are relatives of the victims of the case, have interests with the victims, and act as defendants' defenders to safeguard the rights and interests of the defendants.

Article 51 of the Code of Practice for Lawyers is under any of the following circumstances, the lawyer shall inform the client and voluntarily withdraw, except that the client agrees to act as his agent or continue to undertake:

(2) Being a defender of a criminal suspect or defendant in a criminal case, and being a close relative of the victim in the case together with other lawyers;