In a thrilling game of cat and mouse, Rias Gremory finds herself in a heated encounter with her teacher, the two entwined in a passionate embrace, oblivious to the prying eyes of the school's headmistress. The door creaks open, and they freeze, hearts pounding, as Rias' name is called from the other side. With a swift move, the teacher hides, leaving Rias to answer the door, breathless and disheveled, her secret barely contained.