Who is the Criminal?

1 Ninjutsu Gakuen Entrance 2 The Kunoichi Class is Terrible 3 A Strange Ninja 4 Gakuenchou's Thoughts 5 Shinbei Disappeared 6 The Puzzle of the Two-faced Ninja 7 Season 1, Episode 7 8 Shinbei is Suspect 9 The Swordsman - Hanabusa Makinosuke 10 Who is the Greatest? 11 Sneak Into the Kunoichi Classroom 12 Shinbei is Missing 13 The Shinobi Genius 14 Taiji the Thief 15 The Big Contest 16 Magnificent Friendship 17 Misshi Shinkurou 18 Run to Nameko Castle 19 The Pirate who Couldn't Swim 20 Lovesick 21 Yamada-sensei is the Target 22 Combination Class 23 Kinoko Mountain Juudan Practice 24 Once Again, the Swordsman Hanabusa Makinosuke 25 My Father's Killer 26 There'll Be No Summer Vacation 27 Gakuenchou's Wallscroll 28 Message from God 29 The Lord of Maitake Castle 30 Steal the Rations! 31 Daisan-kyoueimaru's Ship 32 Hieta Happousai 33 Shinbei's Apology 34 Many Kinds of Autumn 35 Troubled People 36 The Famous Sword Gokurakumaru 37 The Missing Ricebowl 38 Shindemohashirou's Mansion 39 The Excellent Little Brother 40 The Phantom Mushroom 41 Summer Vacation Senility 42 The Transfer Student of Rumors 43 Tensaimaru and Shuusaimaru 44 An Autumn Wind Pierces the Body 45 Wind, Woods, Fire and Mountain 46 Junko and Junichi 47 The Pot of Treasure 48 A Greedy Mistake 49 Nintama Helpful Sword? 50 Gakuencho's Soup 51 The Shy Ninja 52 The Nervous Ninja 53 Save Ichinen-hagumi! 54 Kirimaru is Bothered 55 The Stolen Sign 56 The Secret of the Sign 57 The Princess is? 58 The Part-time Mountain Bandit 59 Kurokoge Panzou 60 The Piece of Tatami 61 Mom Comes to the School 62 Dad's Success 63 The Poison Under the Floor 64 Kiri-chan's Mistake 65 The Shuriken Contest 66 The Burning Menu 67 It's Fake Money! 68 Who is the Criminal? 69 The Stolen Gun 70 Showdown! Dokutake Castle 71 Nintama Make-up Exam 72 Goldfish Yaai! 73 The Cafeteria is Taken! 74 It's a Hotspring! 75 Hemuhemu is Missing! 76 Give Back Hemuhemu! 77 To Sose Temple! 78 Beat the Second Year Students! 79 The Ridicoulously Strong Gang of Theives 80 Find the Weak Point! 81 I'm Full! 82 Be Cold-Hearted! 83 Obachan Catches a Cold! 84 Kirimaru's Big Profit 85 I Want to be a Teacher 86 The Beginning of a Beautiful Day 87 Kirichan's Part-time Jobs 88 Kirichan's Greed 89 Strong Shinbei 90 The Failure Ninja 91 And the greatest is?