[Concern] Nephew's violence and distractibility

This is my nephew, like my son.

But I just thought he was a bit mischievous and disobedient.

I didn't realize that the line indicated violence.

They say it's hard to conduct classes because they can't stay still even for a moment at school.

Moreover, they say he breaks anything and hits his friends.

The child is very small.

Even though I saw it as about 6 years old and just found it cute, I was worried about getting hurt somewhere, but it turns out the oppositeㅠㅠ

I am scheduled for counseling and treatment. Will I get better?

I'm so sad.