Ep. 23: Senku dan rekan-rekannya menyiapkan tungsten dan komponen untuk ponsel pertama yang dimodifikasi.

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Senku unveils the pile of tungsten for final preparation. After being crushed into a fine powder, it needs to be heated at an extremely high temperature for it to become usable. While Senku readies the tungsten powder, he charges Chrome and Kaseki to create a method of pinpoint high-temperature heating using everything they've learned since Senku's arrival in the village. Once the tungsten filament is created, everyone splits into groups to complete the remaining tasks; Suika and her friends finish twining the gold wire, Senku and Chrome create the necessary plastic, Kinro, Ginro, and Kohaku burn coal for its ash and make a microphone, and Gen and Ruri create zinc-carbon batteries. They all finish their tasks and Senku puts it all together, creating the first modded cell phone in the new world. (Source: Wikipedia)