Senku, Taiju and Yuzuriha head to Hakone to collect sulfur for gunpowder, which they’ll need to fight Tsukasa. They accidentally set off an explosion, which attracts some unexpected attention.
Potassium nitrate, sulfur, 
and charcoal all go in the mix,
،نضع نترات البوتاسيوم والكبريت والفحم في الخليط
Packt man Bengalsalpeter,
Schwefel und Holzkohle zusammen
Mélanger le nitrate de potassium,
le soufre et le charbon,
Mettiamo insieme il nitrato di potassio, lo zolfo e il carbone,
Nitrato de potássio, enxofre e
carvão vão todos na mistura.