Kyushu Secret Realm

From the moment the boy entered the forbidden area, the gears of fate began to turn slowly. A huge conspiracy throughout ancient and modern times gradually emerged. How does a person make choices that involve the past, future and present life. What is the secret realm of Kyushu? Who is the mastermind behind this? ……… "I'm lucky enough to meet you in my third life. Even if it's sad, it's still love."