- A key to a mystery location. * Computer Room Key (コンピュータ室の鍵) - The key to the room at the back of the Maid Cafe. * Baseball Club Key (野球部の鍵) - The baseball club room key. * Tennis Club Key (テニス部の鍵) - The tennis club room key. * Athletics Key (陸上部の鍵) - The athletics club room key. * Cycling Key (サイクリング部の鍵) - The cycling club room key. * Dojo Key (武道館の鍵) - The dojo club room key. * Gym Key (体育館の鍵) - The gym key.