Oboro Tsukimigusa (月見草 朧, Tsukimigusa Oboro) is a seemingly female school prefect trained by Matsukage Nishikinomiya to adhere to a strict moral code that mostly revolves around protecting Anna Nishikinomiya from all potentially immoral influences, including mundane items like basketball hoops and toilet paper rolls. Oboro even has this codified under "Five Provisions," which includes the caveat that Oboro cannot interfere if Anna herself exhibits lewd behavior or desires.