One Piece: The Strongest Conqueror of All Worlds, Serving in the Marines

【Lighthearted + power-ups + Marines + system-data flow】 (Starting at 80,000 words, the protagonist goes on a rampage and reaches the summit. The story has already reached the Paramount War.) After being reborn, Jian Sheng awakens the strongest path-to-all-worlds System. Completing randomly triggered missions makes him stronger, and killing enemies makes him stronger, too. In just one day, he goes from a complete weakling to someone capable of beating the Shichibukai to a pulp…