Douluo II: the Sword Is Hidden in the Snow, and the Gods Are Conferred in the Far North

Ling Shuang traveled through the Douluo Continent, and at the age of 6, she awakened the Ultimate Ice Martial Soul of the Twin Spirits, the Snow Umbrella Ice-Sealed Sword, and was accidentally bound to the "Destined Unique System". She bound one person from the opposite sex she had met to increase her favorability and if her relationship had a breakthrough, she would receive rewards and opportunities, and she would stay with the bound person for a lifetime and never leave him. Ling Shuang binds the Snow Emperor, the head of the three heavenly kings in the Far North, to the ice, sky and snow goddess, and reaches a contract with the Snow Emperor, making three promises [not to deceive, to protect the Far North, and to revitalize the Ice Territory] The twin martial souls gifted by the system evolved one after another, and their combat power increased rapidly. The Snow Emperor's favorability is also rising step by step, from being alienated and hostile to being devoted to each other. The two work side by side to build the Far North, revive the ice field, and build a country of ice and snow.