Marines: Colonel, Don't Go

(One Piece + Momonosuke must die + the Celestial Dragons must die + self-discipline leads to a better you + not a Straw Hat crew story)

Jack transmigrates to the world of One Piece and becomes a righteous captain in the Marines.

Magellan: “What? The chief jailer and deputy warden both quit, and even formed some kind of Handsome Jack Fan Club?”

Sengoku: “This is bad! Germa 66 has taken the Celestial Dragons hostage, and Vinsmoke Reiju says she'll start killing people if we don't hand over Jack.”

Momousagi: “Anyone who dares hurt my disciple is dead.”

Vice Admiral Doberman: “Captain Jack is a man I respect. Even if he becomes a pirate, that won't change.”

Mihawk: “Who knew? A girl named Tashigi said she wanted to learn swordsmanship from me, but it was actually to recruit me into the Jack Swordsmen's Crew.”

Smoker: “That's my Tashigi! I'm quitting too. Jack, if you become a pirate, I'll chase you to the ends of the earth and kill you.”

Kozuki Hiyori: “The gates of Wano are open only to you. If you don't return in three years, face the wrath of the samurai.”

Sengoku: “Everything's gone to hell! These seas are an even bigger mess than the one Roger left behind.”