You push the mouse to the edge of the wide walkway, towards the water. The crowd clears a path for you. The mouse clearly has never seen combat- they look terrified. You shove the mouse over the railing, and they scream as they fall to the water. They barely even try to swim, and quickly disappear under the water
You quickly make your way towards the outskirts of the Sewers. You push through a sewer grate and find yourself blinded by the sunlight. Once your eyes adjust, you see the Lower City in daylight. You're free from the mafia.