Ace's Great Blackbeard Search

Ace's Great Blackbeard Search (エースの黒ひげ大捜査線 Ēsu no Kurohige Daisōsasen) was the 6th Mini-Series created as side stories on the title pages of each One Piece chapter.

Length
Ch. 272-305 (29 installments)

Short Summary
During the course of his travels to find Blackbeard, Ace befriends the milk-maiden Moda after she saves his life, and in return, infiltrates the Naval base G2 to deliver a message to Officer Comil. During his undercover stint, he inadvertently helps reunite Moda with her parents, and acquires information on Blackbeard. Although it was never animated, reference to the arc can briefly be seen in the newspaper read by Crocus in the episode 381, which shows Moda with her family and Vice Admiral Komir drinking milk.

Chapter Titles

 * 1) Capture the Guy Who Ate and Ran (chapter 272)
 * 2) Pardon Me for the Eat and Run (chapter 273)
 * 3) Asking Around (chapter 275)
 * 4) Wrong Guy (chapter 276)
 * 5) Toss Him in the River! (chapter 277)
 * 6) Saved From the Current Leading Out of Town (chapter 278)
 * 7) Ace Wakes Up (chapter 279)
 * 8) Milking Girl Moda's Problem (chapter 280)
 * 9) Delivering the Letter in Exchange for Saving My Life (chapter 281)
 * 10) Grand Line Marine Base G2 (chapter 282)
 * 11) Infiltrating the Marine Base (chapter 283)
 * 12) Havin' a Feast in the Marine Dining Hall (chapter 285)
 * 13) Heard You Talkin' Smack About Whitebeard (chapter 286)
 * 14) Intruder, Commander Ace (chapter 288)
 * 15) The Military Meeting's Coffee Is Awful (chapter 289)
 * 16) Vice Admiral Comil Hates the Base's Bitter, Gross Coffee (chapter 290)
 * 17) Top Secret Marine Intelligence Ship Returns (chapter 291)
 * 18) Top Secret Marine Intelligence Ship Catches Fire (chapter 292)
 * 19) Pirates Burned the Ship. Top Secret Intelligence on Fire Is a Bad Thing!! (chapter 294)
 * 20) A Sailor Jumps Into the Flames (chapter 295)
 * 21) The Sailor Who Saved Our Men and Intelligence Is On Fire (chapter 296)
 * 22) Ace Gets Busted (chapter 297)
 * 23) Forgot Something (chapter 298)
 * 24) Moda's Letter (chapter 299)
 * 25) Blackbeard Information Extraction Successful (chapter 300)
 * 26) Special Marine Grocery Ship on a Trip to Buy Milk (chapter 301)
 * 27) The Cooks on the Marine Grocery Ship are Moda's Parents (chapter 302)
 * 28) Coffee with Milk Makes for Happy Meetings (chapter 303)
 * 29) In the Name of Piracy (chapter 305)