In episode 4, Interplanetary Mutual Observation Agent Muneto arrives to shield Kayo from the hybrid entity she has brought into the world, as the creature begins to exhibit uncontrollable instincts tied to its ancient origins. The agent’s mission intensifies when the mutant’s emergence signals the first step toward a larger incursion, forcing swift action to contain the threat before it spreads further. Kayo struggles to break free from the lingering effects of possession while Muneto devises a plan to neutralize the beast without harming its unwilling mother. This installment highlights the growing stakes of their interspecies conflict and the fragile hope of preventing an ecological catastrophe from repeating.