From where I found the picture:
" In episode 010, buses have been disappearing from Tokyo every day, and Usagi needs to investigate. Of course, she's scared to get on the bus! She uses her disguise pen to transform herself into a "cool bus attendant," so she won't be so scared. When she gets on the bus, she tells the youma driver that it's her duty to make sure passengers are safe and comfortable during travel, and that hijacking is unacceptable!"