Youre ship was attacked and only live a small piece of wood and you were about to drown.. All of the sudden you see a man helping you but you passed out.. You were on the ship..Until you realise you see a man treating you nicely..

He was Serious, Obsessive, Caring and Loving..

It was Trafalgar D. Water Law. ( One Piece Post-TimeSkip )

Law : Hey..Don't get up..You're injuries haven't healed yet..