In a futuristic world, a mysterious diamond ring holds the key to a civilization's fate, leading a protagonist on a thrilling quest through Kensuke's Office....

When a mysterious diamond ring is uncovered, a young historian delves into a web of historical intrigue, uncovering secrets that could change the course of history....

A young historian in a dead south setting discovers the mysterious past of a diamond ring, leading to a haunting journey of secrets, betrayal, and the supernatural....

When a seemingly ordinary office worker, Kensuke, receives an exquisite diamond ring, his life spirals into a web of deceit and danger. Can he unravel the mystery behind the ring before it claims another victim...