In this pivotal episode, the conflict between Senku's scientific vision and Tsukasa's idealized "Stone World" reaches a breaking point:
: Tsukasa tracks them down and takes Yuzuriha hostage. He offers to spare Senku's life if he renounces science forever. Senku refuses, choosing to die for his beliefs rather than live without science. Stai guardando DrStone Ep 04 SUB ITA
: The episode features a flashback showing a young Senku’s passion for space travel and his father's support for his early experiments. In this pivotal episode, the conflict between Senku's
You can watch (including episode 4) with Italian subtitles on major streaming platforms: Dr. Stone Episode 4 Anime Review - DoubleSama : The episode features a flashback showing a
: 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.