He's in Shugo Chara!. He's the antagonist who becomes a protagonist that works for Easter Corp. and enjoys teasing the main character. He is known for having blue cat ears that 表示する up whenever he combine with Yoru, his would-be self.
What do あなた mean? The 表示する isn't rude at all. It's very cute. If あなた mean Ikuto, he's kind of aloof and mysterious, and he tends to be perverted towards Amu a lot. But othe than thought, no, neither is rude.
