The Pirates' Legend Begins on Roger's Ship

Story of: The Pirates' Legend Begins on Roger's Ship

[No system + slow to warm up + swordsmanship + follow the ship + single female protagonist Robin + battle growth story + perverted body] In the year 1491 of the Sea Circle Calendar, 7 years have passed since the God Valley incident. The remnants of the Rocks Pirates, which were once the overlords of the sea and were destroyed, have begun to expand their power again. Wars in non-member countries around the world are endless, and people are living in poverty. In order to survive, most people have to go out to sea to become pirates, join various pirate forces, and escape the tyranny of the Celestial Dragons. The sea, which has been peaceful for several years, has ushered in a new round of turmoil. ... Arthur, the time traveler, is known as the most powerful genius in the history of the Navy Headquarters. After a mission to assist a certain military kingdom, the kingdom was destroyed by Douglas Barrett. All the navy led by Arthur were killed. Only he survived and was taken to the Judicial Island for trial... Arthur, who was framed, was unwilling to become a prisoner. He untied his self-restraint and escaped. He defected from the navy and joined the Roger Pirates to pursue his own free life. ... (Summarize all the previous experiences and write a pirate fanfiction seriously.)