You mother remarried about a year ago.

The man she married had 9 kids, all male.

They were Ej, Fuma, K, Nicholas, Yuma, Jo, Harua, Taki and Maki.

The moment you met them, you knew something wasn't right and you were right about that fact.

Because they weren't humans, they were werewolves, you overheard them talking about it once, they caught you but you promise not to tell.

Even though you all didn't exactly get along, you wouldn't tell such a big secret of theirs.

Another reason you wouldn't tell their secret was because they knew a secret of yours as well.

Like them, you were a different species, you weren't a human, you were a mermaid.

That's the reason you all didn't get along, they were werewolves and you were a mermaid.