That Time I Got Reincarnated as a Slime the Movie: Tears of the Azure Sea

The Azure Sea is being corrupted by a creeping mysterious pollution (environmental destruction), and the shadowy conspiracy represents human-caused destabilization of the natural order. The threatened consequence — the Aqua Dragon, a guardian deity, being forcibly awakened — functions as nature's destructive retaliation against surface and undersea worlds. The causal chain is explicit: human conspiracy + pollution → ecological harm → guardian entity unleashed. Rimuru's mission is to stop the pollution and restore the natural balance, satisfying the 'resolution involves respecting/restoring nature' signal.

About this trope: Humanity's exploitation or destruction of the environment triggers catastrophic consequences — nature retaliates through disasters, plagues, animal attacks, or ecological collapse, as if the planet itself is punishing human arrogance.

Kaien, an entire undersea kingdom, cannot resolve its twin crises alone and must send a priestess to implore Rimuru's outside intervention — establishing community helplessness without the exceptional individual. Rimuru personally leads the deep-sea investigation, and the stakes (preventing a full-scale inter-realm invasion) are systemic crises that no institution addresses. Rimuru's unique capabilities are the decisive factor; the story frames the resolution as contingent on his involvement.

About this trope: One exceptional individual matters more than institutions or collective action. Problems affecting millions are solved by a single remarkable person. Everyone else is passive.