Seize the weaknesses of two close individuals whose lives are opposite to your own, and freely grant the days of the dual-transforming female protagonist.

Capturing the weaknesses of two people close to me, who are the opposite of my life, and indulging in the days of a double transformation heroine [with Chinese subtitles] At some point, strange creatures known as magical beasts began to appear. The source of their emergence remains unknown. Aside from being nocturnal, we know nothing of their ecology. While the police are at a loss with countermeasures against the magical beasts, there were rumors circulating in society. It was said that a pair of girls in mysterious suits were defeating the magical beasts. This was a ridiculous delusion and should have been dismissed as folklore. However... magical beasts themselves were initially considered a ridiculous delusion. Therefore, perhaps?? The protagonist, an introvert with few friends, leads a repressed life. He had a contrasting younger sister and childhood friend. The younger sister had a domineering personality and loathed the incapable protagonist. The childhood friend, with the looks and personality that everyone adored, excelled in her studies, serving as the class representative—she was flawless, yet her attitude towards the protagonist carried a sense of pity, always leaving him feeling miserable. The protagonist started to develop twisted feelings for these two contrasting figures and indulged in fantasies of turning them into obedient playthings who would do his bidding. One night, while strolling in the park, he heard a woman’s scream. Out of curiosity, he approached the sound and found a girl in a mysterious suit desperately resisting a strange being that had defeated her. As he watched from the shadows, her true identity was finally revealed. It was his childhood friend. The protagonist, coincidentally present, threatened to expose her identity and vented his usual frustrations. After having been defeated by the monster and violated, she experienced heightened sensitivity and, in the flow of events, ended up crying during the act. From that day forth, the days of training her to become a sex slave began. However, during this process, he learned that there was another transforming heroine.