The Circumstances of the Limited-Time Second Male Lead

Sihyeon, possessed by the body of 'Abnael', a terminally ill supporting male character in a romance fantasy novel. He receives a revelation from God that he can return home if he completes Abnael's mission. If it's the mission of someone with an incurable disease and limited time, isn't it just dying? He could endure even death if it meant returning home. But then... "You're awake! Butler, Young Master Abnael has woken up!" "This is crazy..." Right after death, when he thought it was finally over, he regressed to the moment of his initial possession! To make matters worse, this regression seems to be because of Calyx, the main male character of the novel... "Why......" "You don't look well." The question of why he did such a thing was swallowed up by Calyx's next words. Abnael unconsciously furrowed his brow at the strange sense of discomfort. Something is going terribly wrong. An ominous intuition that he might be misunderstanding something flashed through his mind. Abnael reflexively raised his gaze. It was to read something from the face of the main male character who was suddenly acting strangely. However, the moment he looked into those coldly frozen eyes, he finally realized. "Why, did you suddenly feel unwell? Is that why you wanted to lock yourself up at home without anyone knowing?" The fact that Calyx Leopold von Bayern was angry. ...And the fact that this guy seems to be the cause of the regression.