A Journey Through Time That Begins with Mystery

Have you ever thought about the second era, where the barriers are intact and the characteristics are pollution-free? Have you ever thought about how many ways the seven old men would kill ghosts if they could be killed? Have you ever thought about participating in the Holy Grail War with ordinary Fujimaru Ritsuka and experiencing family ethics dramas one after another. ... And at the end, there are daily characters encountering supernatural events, bosses accidentally entering the novice village, etc.