Since a young age, Ryuuichi Naruhodou has been determined to achieve his dream of becoming a defense lawyer who fights for the rights of the innocent, even when faced with opposition from the rest of the world. However, when he takes on his first official case under the tutelage of his mentor, Chihiro Ayasato, Ryuuichi soon realizes that the courtroom is a fierce battleground. In these high-pressure trials, he must use his intelligence and quick thinking to uncover the truth behind each crime and clear his clients' names. In Gyakuten Saiban: Sono "Shinjitsu", Igi Ari!, Ryuuichi is on a quest to exonerate those who have been wrongly accused, even though he faces multiple obstacles, primarily in the form of Reiji Mitsurugi, a cunning prosecutor determined to secure guilty verdicts. Despite the challenges, Ryuuichi thoroughly examines each piece of evidence and testimonial, skillfully detecting deceit and solving each case's mystery. Eventually, he must summon his courage and confidently shout "objection!" to confront his opponents boldly in the courtroom.