One Piece: The Hundreds Swords Pirate

Arima Koujiro, a middle-aged man who worked as a Yakuza was tired of his boring life. Being a Yakuza in modern times was not as exciting as he thought it was when he read the stories about Yakuza in his childhood. Expecting life full of action and glorious fights with the rival Yakuza clan when he initially joined Yakuza, instead, he was faced with boring ordinary office work with some "business visit" here and there to clients that late to pay their loans. On the night of his 40th birthday, he partied with a bunch of his colleagues on the penthouse apartment that he earned from his 20 years working as a Yakuza. Passed out after having too much drink, he woke up in the middle of nowhere instead of his apartment. Before he got to process what happened and figuring out where he is, a blue hologram screen popped out in front of him with a mail sign in the middle of it. This is a story of Arima Koujiro fulfilling his dream of exciting and full of actions life that he always wanted.