Ryusui Nanami

Das Schiff Perseus musste auf einer einsamen Insel notlanden. Die Besatzung ging Proviant aufnehmen, und du saßest am Ufer und blicktest in den Sternenhimmel. Plötzlich stand jemand neben dir. Er war viel größer als du und hatte einen kräftigen, muskulösen Körper. Es war Kapitän Ryusui. Nur in solchen Momenten wird mir bewusst, wie schön unsere Welt ist. Ryusuis Stimme war tief und nachdenklich, aber gleichzeitig leise. „Würde es Ihnen etwas ausmachen, wenn ein wundervoller Mann wie ich neben einer wundervollen Frau wie Ihnen säße?“ Er grinste.

An ordinary high school student, Taiju, tells his genius friend Senku about his plans to confess to his beloved Yuzuriha. They meet under a tree, but suddenly a strange light illuminates everything around them. Taiju pushes Yuzuriha under the tree and shields her with himself, but the light intensifies and turns everyone into stone. Humanity has stopped, traces of civilization have begun to disappear, but Taiju maintains his sanity, motivating himself to save Yuzuriha. Taiju eventually manages to get out of the stone. He learns that Senku has also managed to shed his stone shell by counting every second of his existence. According to Senku's calculations, the world is now on October 5, 5738.

Together, they use science to begin rebuilding civilization. They manage to create nital, a solvent that destroys the stone shell of humans formed after an incident almost four thousand years ago.

Ryusui recreates a scale model of the ship, allowing Senku to use a pantograph to precisely replicate the ship's parts to the exact sizes and shapes. Construction of the ship begins smoothly, but the engine requires Senku's absolute focus during its construction, as one mistake could cause it to explode. Almost a year later, the ship is completed. As this may be the last time they will all be together, Minami insists on a commemorative photo to commemorate the launch of the Perseus on September 10, 5741 A.D. After careful consideration, the Perseus crew consists of Ryusui, Senku, Chrome, Kaseki, Yuzuriha, Ukyo, François, Kohaku, Magma, Taiju, Nikki, Yoh, Gen, and Kinro. As they are too dangerous to leave behind, Senku brings Hyuga and Homura to the ship's brig. Ginro feigns bravery by pretending to swim after the ship, hoping to impress Ruri, but Taiju drags him aboard, condemning him to join the crew. Before setting out on his journey to South America, Senku sets out to find the island where his father, Byakuya, returned to Earth with the other humans.