Dr. Stone: Ryuusui -

: It provides the essential backstory and motivation for Ryuusui, who becomes one of the most important characters in the series.

: Ryuusui and Senku share a mutual respect for each other's "devious" and ambitious natures, forming a powerful partnership to conquer the seas. Why You Can't Skip It Dr. Stone: Ryuusui

Watch the official trailer to see the high-stakes introduction of Ryuusui and the start of the Kingdom of Science's maritime adventure: Dr. Stone: Ryuusui - Official Trailer | English Sub AnimeYukuアニメ YouTube• Jun 12, 2022 : It provides the essential backstory and motivation

: To fuel their future ship, the team must find the Sagara Oil Field. This leads to the invention of hot air balloons and the first aerial photography in the Stone World. Stone: Ryuusui - Official Trailer | English Sub

: It marks the transition from primitive metallurgy to more advanced engineering, including aviation and economic systems.