Mew Mammoth!

I'm the famous Aoyama Masaya's older sister. Bratty, a trouble maker, and an overall jealous horrible girl, I'm not fit to be an older sister. I hate Masaya with my entire soul. Still, he isn't all bad. But how can I be a better sister if I'm stuck being a Mew Mew? Mew Mammoth is my name, but Mew Kiwi much shorter.