One Piece: Starting as a Navy Captain, I Get Stronger By Slacking Off

[Navy Faction, Comedic Roast, Power Fantasy, Reasonable]

Q: What should you do if you accidentally time travel into the world of One Piece, where pirates run amok and war is everywhere?

A: Join the Navy! Paid training with a monthly salary over ten thousand; a huge platform with fast promotion speeds; room and board included, with transportation provided (warships)! Backed by the World Government, it is a stable job where working until you are 99 is not a dream!

Marine Headquarters Captain Carl states that the above conditions are basically true, but it fails to stop him from slacking off in the slightest! Who told him to have a Slacking Off System, where doing daily chores and shirking work makes him stronger!

P.S.: Slacking off is just a means to get stronger, it doesn't mean just slacking off and doing nothing at all!