Aside from improving the speed of the Wolf Hunter, Sigma also worked on leveling up his Craft skill. Leveling up his items was good and all, but he felt that it was time to improve the basic parameters of his creations. There weren't many ways of doing that without skill or leveling up Craft.
So, whenever he found an island on the way to the ship, he would get a bunch of earth from it and then move it to the deck. He focused on making harpoons for the giant crossbow that he had made the other day since the weapon consumed one hundred points of mana to make a single projectile… They were heavy, oversized, and powerful, but only those who had a lot of mana could use them.
Aside from those changes, Sigma noticed that Shyon changed a lot as well. She treated the first few weeks of travel like she was on vacation, but she spent most of the time in the girl's cabin, and when she wasn't there, she would just stare at the ocean silently.