Bungo stray dogs

"The battle between the Armed Detective Agency and the Port Mafia has always been a two-party affair, but now a new player is in town! Led by the fabulously wealthy F. Scott Fitzgerald, the Guild wants Yokohama for themselves. Can the Agency close the book on Fitzgerald's ambitions, or will Guild member Lucy Maud Montgomery (and her delightful 'friend' Anne) sentence the detectives to a cruel fate?"--Back cover.