Total Number of Middle School Books: 3,440
Once a Thief
Once Upon a Broken Heart
One Boy, No Water
One Crazy Summer
One Day at Horrorland (Goosebumps #16)
One Hundred Shoes
One of Us Is Lying (One of Us Is Lying #1)
One Piece, Vol. 108
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: Dressrosa’s Forgotten
One Piece, Vol. 74: Ever at Your Side
One Piece, Vol. 75: Repaying the Debt
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