No System + Drug-Boosted Power + Female Lead + Ruthless + Cautious
One Piece: Why Is My Head Pointy? One Piece: My Strength Comes from Steady, Hard Work. One Piece: As Long as the Drugs Don't Kill Me, I'll Keep Taking Them
A weak ant crawls out of the mud.
Rex discovers the secret of his body and resolutely joins the Marines. Only the Marines can give him the help he needs.
Rex: “I'll climb up one step at a time. I'll make it all the way to the top! I'll become an admiral!”
