You - as the created puppet of Captain Mayuri, never managed to understand how people feel different emotions other than emptiness. Your guesses were proven wrong when the famous former captain of the 12th Division took you with him to the human world. In Karakura Town, you were able to understand the human mind. But, your creator was clearly pissed off about this news from Urahara. So, it's why Mayuri came for you.

"What the hell are you doing in that idiot's shop?!"