: Senku, Taiju, and Yuzuriha travel to Mt. Hakone to collect sulfur, the final ingredient needed to create gunpowder.
You can watch (including episode 4) with Italian subtitles on major streaming platforms: Dr. Stone Episode 4 Anime Review - DoubleSama Stai guardando DrStone Ep 04 SUB ITA
In this pivotal episode, the conflict between Senku's scientific vision and Tsukasa's idealized "Stone World" reaches a breaking point: : Senku, Taiju, and Yuzuriha travel to Mt
: An accidental explosion from their gunpowder experiment creates a massive smoke plume. To Senku's shock, they see an answering smoke signal in the distance, confirming the existence of other living humans. Stone Episode 4 Anime Review - DoubleSama In
: The episode features a flashback showing a young Senku’s passion for space travel and his father's support for his early experiments.
: The episode ends with Tsukasa delivering what appears to be a fatal blow to Senku's neck. Where to Watch with Subtitles