Nai's sudden collapse leads to an astounding revelation about his physiological makeup that shakes up Gareki and the entire Circus. In light of the new discovery, Circus' interest in Nai deepens, and an expedition is organised to the forest that Nai claims to have come from. With mirages and illusions everywhere they turn, can they find any actual clues that will bring them closer to the truth? Then, Gareki takes the opportunity to return to his hometown, where his family appears to have gotten themselves, literally, into a bloody mess...