​Tsunetaka Kareki, a seasoned Home-Security Officer, discovers his father’s new wife, the stunning Katsuragi Shouko, has ulterior motives. Determined to protect his household, Tsunetaka focuses on Shouko’s alluring daughter, Yuki. Utilizing his surveillance skills, Tsunetaka stumbles upon intimate moments capturing Yuki’s beauty, the seduction of her girlfriend, and the innocence of her untouched self. Armed with this blackmail material, he takes advantage of her in the most provocative manner, deflowering her and exploring her forbidden areas. However, his next conquest remains: Yuki’s sister, Katsuragi Yuki. Witness the thrilling exploits of Tsunetaka as he uses his knowledge and power to protect his home in this captivating hentai episode.​