Kyujutsu competition. Make it through the first couple of days.
Fujiko finds the gaijin pepper buried under the square in the centre of the city. One of the people who last touched the barrels works in a rat racing emporium. We grab him and take him back to Fujiko for questioning.
He claims that his boss told him to plant the explosives. She is Matsu Retsiko, and owns the Rat Emporium.