Every novel has a extra that acts as background just to fill the space. She, who acts like a mole visits every world to mess up the plot. World 1: High school male lead who is the topper x introvert female student who is always the second world 2: Domineering CEO x his ex crazy fiancée world 3: Poor Student x friend's terminally ill sister world 4: Cold Professor x one of his students world 5: 80s Soldier x Military doctor world 6: New actor x actress in same show