[Oshi no Ko] 4th Season

Production begins on The 15-Year Lie, the film Aqua designed to turn Ai's hidden past into something the person responsible for her death cannot ignore. Ruby and the people connected to Ai step into roles that reconstruct her life, while Aqua moves ever closer to Hikaru Kamiki and to the ending he has spent years preparing.

The film does more than expose the truth about their mother. It forces Aqua, Ruby, and everyone around them to confront what Ai's lies truly meant, and whether what she left behind was revenge or a message nobody fully understood. As the confrontation reaches its final stage, the price Aqua is prepared to pay becomes more dangerous than any role he has ever performed.