Interstellar: Starting from Taming the Arrogant Female Captain

Xia Chuan traveled through time and became the son of the generalissimo in the interstellar love game. The plot line he got was: after successfully conquering the four female protagonists, his relationships with the four of them at the same time were exposed, and they were eventually cut into pieces. However, the system prompts: "Please let the heroines hate you. If the favorability of any heroine is full, you will immediately experience the final ending; only when the favorability is completely cleared, you can return to reality with all the items from the interstellar era." In order to survive, Xia Chuan decided to live and die and show off to the end. But why did the Iceberg female captain, who was supposed to hate him, have a favorability score of +1?