Ryusui Nanami

A man awakened by Senkuu as the captain of the ocean-going ship. He is the heir of the Nanami Conglomerate, boasting a group asset of 20 trillion yen in the shipping industry and is also the owner of the maritime school "Nanami Academy." He is 187 centimeters tall, weighs 78 kilograms, and was born on November 11th. Blood type B.

His characteristic features include finger snaps and the catchphrase "Ha-ha!" He boasts that the world is his and aims to acquire vested interests in the new world. He also claims that all women are beauties. However, these are also expressions of his stance from childhood of not deceiving or compromising on his desires. This desire sometimes results in innovation, leading Ukyo to comment, "In a world like this, being greedy might not be a bad thing." He has studied the art of leadership, possesses extremely high leadership qualities, and even claims, "Someday, I'll have everything in the world in my hands," but the "world" he refers to is "a world that shines brighter as a result of everyone's efforts," so he is favorable towards others who demonstrate abilities beyond his own. He doesn't insist on being at the top and feels that in the current world, Senkuu, who shows enjoyment and leads everyone to follow voluntarily, should be the leader. Therefore, when Senkuu made a camera, he suggested that the first photo should be of Senkuu.

Since childhood, he spent all his millions in allowance on models like bottle ships. From middle school, he was a hardcore sailor who had real sailing ships made and sailed them around. His experience is very high, allowing him to spot the flaws in the sailing ship made by Senkuu and provide accurate advice. He also has the special skill of accurately grasping temperature and humidity with only his senses and making highly precise weather predictions. Since he often played other games, he quickly mastered operating the drone made by Senkuu, showing his dexterity. He often says, "A sailor's intuition is spot on," when he senses something amiss (often followed by Senkuu deducing the cause of the discomfort through scientific reasoning).

From his experience, he points out that oil is necessary to get the ship to its destination. At that time, he demands the rights to the discovered oil field in exchange for his technology. He introduces the concept of currency to Ishigami Village. He believes that money is a tool created by civilization, not something that controls people, but something to unify intentions.

After everything is over, he formally establishes the Ryusui Conglomerate, cooperating in the world's reconstruction while acquiring rights.