The four of them weren't always broken. This OVA is the story of how they shattered, watching good men make choices that turn them into the people you already know they became. By the time it ends, every laugh they share in the original series carries the weight of what they lost to get there.
Before they became the misfit monks of legend, Genjyo Sanzo, Genjyo Cho, Hakuryu, and Sha Gojyo were ordinary people caught in extraordinary circumstances. When a mysterious epidemic begins turning humans into violent demons, the four find themselves thrust into a dangerous investigation that forces them to confront their own pasts and the darkness lurking within themselves. The bonds between them are tested as secrets unravel and betrayals emerge from unexpected places. What begins as a desperate search for answers transforms into something far more sinister, revealing the true cost of survival and the weight of choices that can never be undone. Each character must decide what they're willing to sacrifice and who they can truly trust when everything falls apart. This is the story of how broken people came together before their journey to the west, when redemption was still uncertain and friendship hadn't yet become their greatest weapon. Raw, emotional, and steeped in moral ambiguity, this prequel shows the violent birth of an unlikely family forged through blood and sorrow.