One piece: The Mob's Diary

Rell, a random guy from Earth, one day reincarnated into One Piece world after his death and became the small baby of a couple living in Loguetown. However, unlike most reincarnation stories, his life was pretty normal and average after that. No abnormal powers, no super talent in anything, no advantage over others... Nothing. There were no problems coming one after another, as reincarnators tend to have, and most of what happened around the world barely even affected him or his family. He was just another normal boy from Loguetown. Albeit, with the memories of an adult whom, you would say, knew about the future. That, however, was only until he became 8 years old, and a strange screen appeared in front of him. [Diary's System Activated! Write anything you want in your new digital diary, and you will be rewarded with special rewards depending on how important what you write in here is!] At that moment, Rell didn't really care all that much about the weirdness of his system. He was more focused on the free rewards other than anything. However, it was several years later that he finally noticed that something was wrong and that it probably was all his fault. "What in the world happened to the story?!" Some people say that diaries are a private thing. However, his system certainly didn't share that opinion ... °°° (A/N: The illustration of Nami is made by ᑕᕼᗩḰᕮ. If they suddenly want me to take the picture down or whatever, I will do so immediately. No problem there. One piece is not mine, and neither are the characters that exist there. I only have the rights to my main character and any other OC that I create for the sake of this story. I don't know what else to write here to not get sued, but if you read this, please don't sue me. UwU