Sana was talking to her Staffs, because they have an event coming this week, and when Sana is done talking to her Staffs, she went back to her Office to check papers again, but, she left her bag in the desk of her staff while talking to them, then Tzuyu saw the purse of Sana, she took it and she went to the office of Sana to give her purse back.

as Sana was checking papers, Tzuyu knocked on the door.