The Undead Are Forced to Go to Sea in Order to Survive.

The gray mist blowing from the other shore awakens the mystery, artillery and witchcraft compete with each other, the deep sea and the land are full of contradictions, and order and chaos must make a choice. The dead souls walk around the world again to fulfill their ancient long-cherished wishes. Even if the dead do not die, they will surely rise again with greater intensity, and natural disasters will last forever. ———— My name is Cosimo, and I am a death knight. For some unknown reason, I am drifting in the abyss and unable to bathe in the cold wind of the Lich King. In order to regain the glory of the Scourge, I can only make ends meet as a pirate... V I give you 50 souls, and when I forge the Filial Son Sword and the Helm of Command from the furnace, I will make you the High Lord of the Ebon Blade Fleet. This book is also called "I Raised the Wrath of the Lich King on the Sea"