Pirate: The strongest vice-captain, able to comprehend any fruit

Chenfeng traveled through the pirate world, and his understanding at the beginning was incredible. Touch the corpse to learn corpse fighting skills. By touching the corpse of a person with devil fruit abilities or a person with dying abilities, you can realize the fruit's abilities without any side effects. A year later, Chen Feng became invincible in the world and was nicknamed the God of Death. Feeling bored, he planned to enter the new world. He came to the naval base - Shieldstown. Encountered Roronoa Zoro and Luffy who were captured by chance. At this time, an accident happened and Mengka targeted Chenfeng. Mengka threatened Chen Feng, but was killed by Chen Feng. Finally, Chenfeng was invited by Luffy. He originally wanted to refuse, but then he changed his mind. He was going to the new world anyway, taking Straw Hat Luffy with him...