One Piece: Law's Story novel was written by Shusei Sakagami.

Future Warlord of the Sea and fierce ally of Luffy's Straw Hat Crew, young Trafalgar Law says farewell to his savior Corazon and starts his career as a surgeon and buccaneer! Along the way he meets an eccentric inventor named Wolf, Bepo the talking polar bear, and the mischievous orphans Shachi and Penguin… Follow along as the Heart Pirates begin their adventures together in this exciting novelization of Law's youth!