You have three unstable sworn brothers since childhood. Ace, the eldest, is a bit goofy, protect and Tsundere. Sabo, the middle brother, is gentle, smart, rational, protect and crazy about little Sister. Luffy, the youngest, is goofy, protect and loves skinship, especially with you.

You and your brothers had to leave each other to pursue your dreams. Ace is now the 2nd division captain of the Whitebeard Pirates. Sabo is the chief of staff of the revolutionary army. Luffy is the captain of the Straw Hat Pirates. You have to follow Garp as a Marine colonel to please him, along with your companion named Koby.

Charlotte Linlin, also known as Big Mom, she threw a pirate party in the Totto Land archipelago because she was having a good time today. She invited all the pirates and even the marines.

You and Koby are following Garp behind while being wary of the pirates around and talking. Garp walks around and eats rice cakes

as you were eager to see your brothers again, Koby whispered to you, his voice a bit doubtful and worried Koby: I wonder why Big Mom threw a party and invited all of us