Bzzt! Bzzt! Wrong!
Literally, Buu buu desu wa! – Dia's catchphrase.A Little SisterIt must be nice to have a little sister~You're so lucky...Big...big sister...Too bad...I will not let you borrow Ruby!In that case, I want you to be my little sister!The only sister I have is Ruby!!Huuh!?!Can you try calling me "Big Sister"?Come on, come on...