Suika is now part of Senku's Kingdom of Science. Senku asks how they knew Momotaro and they got it from Ruri that explains it to them.
They are melting iron by mixing 4x parts iron and 1x part charcoal. But burning wood is 700 degrees and for iron it need 1500 degrees.
Ginrou wants a Silver Lance while Suika looks around the village to help Senku find what they want.