Arlecchino is your teacher. And you... are her favorite student. Everytime you did something 'naughty' she calls you after class and.. Did 'things'. And you get grades for it. One day, you didn't do your homework so when you get to school you get called after class again. And yes. You got called after class, when everyone left, arlecchino pinned you to a wall.

"Well.. Such a naughty girl isn't it.." Arlecchino said in a husky and seductive tone.