I'm Sailing to Build Cthulhu

Coming to the world of One Piece, Ming Yoshihiko can extract genes from any creature in the world and apply them to the creatures in One Piece. As a result, many "unspeakable" figures were added to One Piece. ... At the top of the war, the navy looked at a row of giant sharks fused with the 'giant gene' on the sea, dumbfounded. On the isolated island, the indigenous residents worshiped the giant dragon that was fused with the 'Zog' gene. Through the demihuman genes, Yan created a group of tenacious and immortal creatures in the pirate world. Since then, the entire style of the Grand Route has changed... This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.