Total Number of Books: 3,157
One Day in the Life of Ivan Denisovich
One Flew Over the Cuckoo's Nest
One Hundred Shoes
One of Us Is Lying (One of Us Is Lying #1)
One Piece: Ace’s Story, Vol. 1: Formation of the Spade Pirates (ONE PIECE novel A #1)
One Piece, Vol. 66: The Road Toward the Sun
One Piece, Vol. 67: Cool Fight
One Piece, Vol. 71: Coliseum of Scoundrels
One Piece, Vol. 72
One Piece, Volume 1: Romance Dawn
One Piece, Volume 23: Vivi’s Adventure
One Piece, Volume 49: Nightime Luffy
One Piece, Volume 50: Arriving Again
One Piece, Volume 51: The Eleven Supernovas
One Piece, Volume 55: A Ray of Hope
One Piece, Volume 56: Thank You
One Piece, Volume 57: Paramount War
One Piece, Volume 58: The Name of This Era is "Whitebeard"