"What is this...?" Walter picked it up and saw a tiny metal ball floating inside the syringe, about a tenth the size of a grain of rice. "Could it be... an oath-keeping poison?"
"Poisons can be metabolized, but micro-robots cannot," Lin Qing confirmed his suspicion. "Once inside your body, it will monitor your various health metrics and warn of any health risks. Of course... it can also become a lethal assassin if you break today's agreement. What we're discussing is immense; mere promises and contracts can't truly bind it. I think Mr. Walter should understand this. You still have time to refuse."
She wasn't joking.
Future Warriors need such tools to ensure captives or important targets comply obediently.
Though this might somewhat harm trust between people, it's better than betrayal after the fact.
Besides, the means of control by the Dimensional Limit Mechanism are far more formidable than this little thing.
