第9話: 千空が爆薬を作成して降伏を強要し、司が妹ミライを蘇らせる動機を明かす。

As Kohaku's team fight Tsukasa and Hyoga, Senku, Gen, and Chrome tries to figure out a way to make gunpowder. Chrome gets sulfuric acid from the tank, of which is mixed with the nitric acid and glycerin from soap to make nitroglycerin, and subsequently dynamite. This makes Tsukasa's men surrender. Tsukasa and Senku talk out as to why the former wants to make a pure world, when it is learnt that he's doing it for his little sister Mirai. A flashback is shown of Tsukasa's past; his sister was deemed clinically brain dead, thus became comatose. He made it his life's mission to protect her, so he became a boxer at a young age. After the flashback, Senku wants a truce in exchange for reviving Mirai. Senku and his group go to the area where her former hospital was. Tsukasa discusses his beliefs and laments on his actions, but won't change his goal. Senku and his crew dig up Mirai from the area. (Source: Wikipedia)

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