Origin of the Chemy! I Understand

1 Gotcha! Hopper 1! 2 Chase, Alchemy, Skateboards! 3 Finding Bushido 4 Antrooper Labyrinth 5 Burn! Fight! Wrestler G! 6 Super A Class☆The Twisted Star 7 Farewell SaboNeedle 8 Great Bonds 9 Dash to Kyoto! School Trip! 10 Blazing Kyoto! Scorched Love: The Chemy Thunderous Affair 11 Catch! It's a Spy?! Can't Be a Rider! 12 Out of Control Liner! Dark Rider! 13 Return to Normal! Friends x Forever! 14 Open Wide Rex! Dangerous X! 15 Seize Happiness! Shine Gotchalibur! 16 Crisis Xmas! Serpent Incident 17 Moonbreak Messenger 18 Sweep Through! The Evolutionary Firelord! 19 The Dawn of Rinne! Transform, Majade! 20 Smiling Angel, Unfunny Joke 21 Mad Warrior! The Black Flame, Valvarad! 22 Love Is a Saber! A Sudden Chemy Story 23 Always Hit Right in the Heart 24 A Sudden Twist! The Forbidden Steel Rider! 25 The Faults of a Young Sensei 26 Thwarting Evil. The Jet Black Winds 27 Gotcha! X Hopper! 28 It's Licking Bizarre! Renge Visits Home! 29 This Town Is Weeping 30 A Rival Appears?! Gotcha and Juliet 31 The Darkness Pair, Believe in Each Other 32 A Great King Is Here! A Puppet's Dilemma 33 Legend Rider? 100 Years Too Early! 34 Only One! All Roads Lead to Gorgeous 35 Gorgeous Time! Legendary Is Never Ending 36 Origin of the Chemy! I Understand 37 Hopper-1 and Treasure 38 On the Other Side of the Rainbow 39 Gotcha Complete! Climax 101! 40 A Wicked Arrival! The Triply Great Dark King 41 Trace of God, Grace of Rainbow! 42 Let's Search! 102 Bodies and a Brother's Feelings 43 Love, Sorrow, or AI? The Power to Erase Hate 44 When Deep Memories Are Unsealed 45 Meeting of Fate, Crossroads of Love and Hate! 46 Black Astrology, Kurogane Oath 47 A Great Clash! Houtaro VS Spana 48 Farewell to Twilight 49 Metal Warrior! Silver Valvarad 50 The CHEMY×STORY of You and I