I'm Doing a Mission in Pirates

Zoro: Chen, he is the most evil swordsman I have ever seen. There is no doubt about his power. Sanji: Forget about Vivi, how come Robin-chan and Nami-chan are also... Hawkeye: I have never been defeated in swordsmanship for so many years until I met him. Whitebeard: It's a pity that boy Chen can't be the Pirate King This is a story where the protagonist travels to the world of One Piece and becomes stronger while completing tasks. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.