Shin Megami Tensei: Synchronicity Prologue

Story

Shortly before the events of Shin Megami Tensei: Strange Journey, Jack Frost is synchronized with the spirit of a human to cross and fight demon hordes. He rescues the out-of-sync Jack o' Lantern after he is frozen by Black Frost, who decimated all the Jacks who previously attempted an attack. They meet a small creature called J-kun. The Jacks traverse the different sectors of Black World to defeat Black Frost, fighting Bifrons, Decarabia, Alice and Girimehkala along the way. After defeating the latter, the Jacks meet J-kun again, who tells them that he remembered that he was once a human, until he started a synchronization program that was sent to him and sent his spirit into the body of a demon in Black World. They realize that destroying Black Frost is the only way to send J-kun back. After defeating Black Frost, J-kun appears and reveals that Black Frost is the missing part of his spirit. He asks the Jacks to destroy Black Frost to free him so that he can hopefully return to his human body. The Frosts do so and release J-kun. The end credits show a list of world news, including the death or rescue of a famous programmer (depending on the ending), a mysterious snowstorm in Antarctica, and the founding of the Black World community project.