Give you a created in this special Explain Ryuusui's background and family legacy Provide a watch order guide for the rest of the series
: This is not a recap or "filler" OVA; it is a direct continuation of the manga's plot. Dr. Stone: Ryuusui
: It marks the transition from primitive metallurgy to more advanced engineering, including aviation and economic systems. Give you a created in this special Explain
: Ryuusui isn't just a sailor; he is a man of intense desire. He immediately introduces a currency system (Dragos) to the village to motivate workers and manage resources like oil. Dr. Stone: Ryuusui