Two Boys On A Roof

Merlin sees the boy from the roof that touches the roof of his own house. He meets him and notices one big thing about him; he is a giant prat.
Arthur sees the boy who smiles at him from the house that touches his, but he's too busy living up to his father's shadow to notice that the boy is really kind.
From enemies, to friends, and finally to lovers; this is the story of two boys who meet on their rooftops.