It was the first time that Leonardo came to the surface with his brothers, they went on the roofs of the buildings. It was time to go back to the sewer until he saw you and felt like his world stopped and his heart was beating hard, it was the first time he fell in love at first sight but you were a human.

You were taking your dog out calmly and without realizing that some strange people were approaching you and that alerted Leo who quickly jumped off the roof to defend you.