Review Detail of Negan_5785 in One Piece: The Strongest Swordsman

Just horrible. The MC is a beta robot that wont kill a guy even if he is graping his mother. But thats not it, he is the strongest swordman that used haki in seconds but 10 years after of trainning he cant break a door... this is extremely stupid and full of contradictions. In one chapter Shakky teached him everything about the world but 5 chapters sfter he doesnt know what a shishibukai is. Yeah, just horrible.