This video was uploaded after episode 3 aired last night. Kento shows us the room within Kohazeya where Daichi and Iiyama spent days and nights developing the Silkclay required for the sole portion of Rikuoh.
https://m.youtube.com/watch?v=SJq1vEv6-gs&feature=youtu.be&a=
Thank you so much for sharing the clip