Childhood Promise

Saint is a beautiful adorable merman that loved by all..

Their home has one rule and that is to avoid human

Saint's childhood when he was around 10 years old he meet an handsome boy and he called so friend..who will it be?

What if one day, they meet again in accident?

Is the boy would still remember him?

What if Saint Love's that guy? is he able to take a risk to break there rule?