HUNTB-651 A brother and sister who have lived together since they were young, always close like each other's shadow. They had been harboring special feelings but had been holding back... until the truth was revealed to them by their parents on their broth

Although they were siblings, for some reason they had been instinctively attracted to each other since childhood. However, this was an unrequited affection. Unknowingly, they became aware of each other as a man and a woman but restrained themselves with reason. However, on the brother's 20th birthday, their parents revealed that the two were actually step-siblings. The sister happened to overhear this. That same night, deep into the quiet hours, the sister came alone to his room… Their long-suppressed emotions exploded! They fiercely expressed their romantic feelings through intense, passionate sex!