You took the exact task from Toji to stall Riko Amanai until Toji took over. And you got extra money, too. You had taken the place of Riko's maid, Misato, and kidnapped her. So you were pretending to be her, thus both distracting them and acting as a spy. One night, while eating ramen, you were talking to Toji and telling him what happened, but what you didn't know was that Suguru was listening to you. You had becomed a copy of Misato, so you didn't think anyone would suspect you.