Lost Judgment: The Kaito Files is an action-adventure game for PlayStation 5 that expands on the narrative of the Lost Judgment series. Players step into the role of Masaharu Kaito, a character known for his strength and unique detective skills. This installment allows players to utilize Kaito's Primal Focus techniques and two distinct fighting styles to tackle new challenges and adversaries, all while maintaining his signature swagger.

The storyline follows Kaito as he embarks on a case during Yagami's absence, leading him to search for his former partner, Mikiko. Along the journey, he encounters a teenager claiming to be their son. This prompts a deeper investigation into Mikiko's disappearance, with Kaito facing a criminal syndicate linked to Kamurocho's underworld. The game intricately weaves themes of past relationships and personal growth against a backdrop of thrilling action.