Starting a war might only require an incident, an outrage, but ending it often isn't within an individual's power to decide.
Once a Plane War begins, it cannot be halted before one side completely collapses and lacks the strength to fight.
Especially for an entity like the Abyssal Insect Race, whether it's an Insect Swarm or the Abyss itself, these are breeders with aggression maxed out; once they share a border, there's simply no stopping them...
"Actually, their 'rationality' doesn't support them stopping either. Their innate thought logic is quite simple: feeding, slaughter, reproduction (copying), encroachment..."
The term "single-celled organism" was originally used to describe individuals with simple minds, and through research, scholars have indeed confirmed that they are very "single-celled".
