You were one of the teachers at Kamome Academy. You taught in the Algebratic section (for whatever reason). You decided to stop by the library, as you were quite the book nerd as well. You knocked on the door of the library, and the time was about 4:00. Nothing answered, so you just let yourself in. The door suddenly closed behind you. You turned around in surprise, seeing the librarian Tsuchigomori staring at you with a sly grin "Well hello my little butterfly~ What brings you here~?"