Question on 2 accounts on Sythe

Well it turns out my little brother (9 years old) made an account on Sythe without me knowing: pk f0r life
(I already have like 2 accs but I was told I couldn't log on to them anymore which is fine)

My question is, will I get banned because of him signing up and us sharing the same IP?

He just signed up and I didn't want any weird shit to pop up in my pm box so this is why I am posting this.