Hi Shy Introvert, I am an introvert too. I have a mean sibling, but I don't think he hates me. He actually just texted me a few minutes ago, and then I saw your post.

My brother has been verbally abusive to me in the past so I was very cautious about responding to him. I still have to protect myself, just because he is younger doesn't mean he can't bully.

If you are an adult you can control the amount of contact you have siblings.

Do you think reducing contact would help?