From a young age, Ryuuichi Naruhodou aspired to be a defense attorney, championing the innocent when no one else would. However, as he delves into his first case supervised by mentor Chihiro Ayasato, Ryuuichi learns that the courtroom is a fierce battleground. In these high-speed trials, he must think creatively to unveil the truth behind the crimes and secure his clients' innocence. Gyakuten Saiban: Sono 'Shinjitsu', Igi Ari! chronicles Ryuuichi's journey as he navigates cases to clear the names of the wrongfully accused. Yet, his path is obstructed by the relentless prosecutor Reiji Mitsurugi, determined to secure guilty verdicts at any cost. With his back against the wall, the defense lawyer meticulously analyzes evidence and testimonies, untangling falsehoods to unravel each case's enigma. Armed with a resounding 'objection!,' the courtroom clash unfolds!