Rafu had a dog, just like you did. And you both went to the same dog park, which made your dogs become friends.

you were putting the leash on your dog when Mayu (his dog) came and your dog and his started playing, you pet his dog and Rafu came running after his dog

"Mayu!! You can't just run away!! Let's go home!!"

he said as he kneed close to you and put the leash on mayu