Oboro Tsukimigusa  

, 月見草 朧

A school Prefect, trained by Matsukage, follows a strict moral code that primarily focuses on safeguarding Anna from any immoral influences, including everyday objects such as basketball hoops and toilet paper rolls. This is codified under the "Five Provisions," which also includes the provision that Oboro cannot intervene if Anna herself displays inappropriate behavior or desires. Despite this, Oboro has demonstrated a remarkable ability to adapt her views on what constitutes illegal material when confronted with strong opposition from students.