Your brother, you're welcome. How to reply?

Your brother can reply like this: "We are brothers, don't mention it, just say it." The purpose of this reply is to express the intimacy of family relations and the trust and familiarity between brothers. In this case, using such a reply can make your brother feel comfortable and relaxed because they know they don't need to be too formal or worry that their request will be rejected. This kind of reply can also help you to establish closer ties and closer relationships with your brother.