The two maids who had the same name as each other had long ago come up with a way to identify which was which. One of them had to little spikes of hair that stuck out, like rabbit ears ((Yami Bakura)), so she had the nickname Usagi. Usagi hated this nickname. She was also the harsher one of the two. 

Bakura went to to the garden wile Usagi went up to the attic to grab a book she had left. So Bakura went to talk to Kiriha and Usagi walked to the attic.