It was the fourth year since she had been raising the cub alone when the cub's biological father came to her door.​ The well-dressed man stood at the doorway and asked her, "Are you Elena?"​ "…Yes."​ "I’m the cub’s father," the man said in a domineering and forceful tone. "Come with me. Don’t even think about refusing or resisting—those are meaningless things."​ Elena stared at his face, which was eerily similar to their son’s, and drawled out a lazy "Oh". In fact, she hadn’t even… thought about refusing or resisting at all.​ —​ On the surface, Kai was the head of the wealthy Voss family; secretly, he was the leader of the werewolf clan. Three days earlier than his scheduled rutting period, he had a sexual encounter with a pure human woman who had wandered into the wrong room.​ Werewolves only had one mate in their lifetime, but he despised unfaithful pure humans who were half-hearted, so he refused to go look for her.​ Then one day, he heard the cry of a cub. Only then did he learn that the pure human woman had given birth to his cub—and the werewolf cub was going through a difficult phase of bone development.​ For the sake of the cub, he took the mother and son back to his manor in the Republic of Aslan.​ At first, he said coldly, "I have no interest in you. We’re just the cub’s parents." "All I care about is my cub."​ They took turns dropping off and picking up the cub from kindergarten every day, attended the parent-child activities held by the school together, and even went to parent-teacher conferences as a pair. During Thanksgiving, they took the cub to their villa in the suburbs for the holiday, decorating pumpkins and preparing a turkey feast together.​ One day, Elena went on a date. The man was shocked and enraged—and only then did he realize his true feelings for her.​ He used taking the cub to the amusement park or skiing in the snow-capped mountains as excuses to cut off all her dates. He even searched frequently for "How to pursue a human woman".​ He gave her a downtown apartment, a limited-edition sports car, high-end custom handbags, a private jet… but none of these worked.​ When the agreed-upon time came, the woman left with the cub. The arrogant werewolf clan leader and head of the Voss family was completely crushed.