One Piece: Casually Having a Melon

[Seven Archons of Teyvat] [Invincible] [One Piece] [No romantic subplots] [No heroine]

What do you do when a shark gets stranded?

What do you do when a stranded shark gets hit by a System?

What do you do when that System gets killed by a coconut in a one-hit KO?

A shark learns to fish, then joins the Straw Hat Pirates with Lu Yu, who often [fails to catch anything].

From then on, the two layabouts stir up a storm in the world of One Piece.