The intruder looked taken aback by Amane's swift action. Despite being disadvantaged, they tried to shake Amane off and run away.
Amane held her staff at the intruder's neck, so the intruder tried to take advantage of the small space between Amane's offence and extend a knife to block Amane's staff.
Using a small knife to block the staff was a good trick. But Amane was far too experienced with these tricks to let it happen.
Before the intruder could plan anything else, Amane increased the staff's pressure, and the knife snapped. The intruder was in deep trouble now. They decided to abandon whatever they were doing and just concentrate on getting out.
But their hurry made the intruder careless. They dropped the vital samples they had collected thus far. The intruder likely thought that Amane would go after the spoils and leave her alone.
